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OVERWORLD · NETHER · RUINS

Ruined Portal

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A broken Nether portal among scattered masonry, netherrack, and treasure. Players salvage obsidian and gold, collect lodestones, and repair the frames that can be fixed for Nether travel.

This guide follows vanilla Java 26.3. Historical changes retain their own edition and version. Bedrock generation and loot can differ. Screenshots and verified seeds below retain their own game versions.

Java 26.3 · Released · Reviewed

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An incomplete obsidian portal frame, crying obsidian and magma blocks on a badlands hillside
Ruined Portal at 2119, 74, 36Seed 28462718234064871 · Java 26.3 · overworldReference capture · Naturally generated structure, photographed in Minecraft Java 26.3.

Game data and source research

Where it generates in Java 26.3

The configurations separate standard Overworld, desert, jungle, swamp, mountain, ocean and Nether starts. The union covers the configured Overworld and Nether biome sets, but each variant has its own allowed-biome tag. [2][5]

Candidate positions and rarity

Java 26.3 selects one potential starting chunk per 40×40-chunk region (640 blocks on each side). Candidate selection happens before successful structure generation; this is not a measured density or an average travel distance. [3][4]

Placement mode depends on the configuration: ocean and swamp starts use ocean-floor placement, desert starts are partly buried, and jungle starts use land-surface placement. Standard and mountain configurations each split their two setup weights equally; these are conditional setup choices within that variant. [1][3][4][5]

What the starting position means

The implementation derives a starting height from the selected placement mode and samples the template bounding-box corners while searching for support. A portal candidate therefore does not imply a surface-visible portal at a fixed Y. [1][4][5]

A damaged frame and its surroundings

The template set contains ten ordinary portal shapes and three giant shapes. Damaged or toppled frames stand among stonework and Nether blocks; placement processing adds further variation, so the saved template is not an exact block-for-block preview of the world. [6]

Repairing the frame requires ordinary obsidian in a valid Nether-portal shape. Crying obsidian cannot substitute for those frame blocks. Check the existing shape and inventory before assuming the ruin supplies everything needed to light a portal. [8]

A damaged frame and its surroundings
PartWhat to look for
FrameOrdinary and giant designs have different broken outlines. [6]
Surrounding patchNetherrack, magma or lava can make the approach hazardous. [7]
Chest areaCheck around and beneath the ruin; terrain placement can obscure parts of the structure. [7]

Inspect the ground before repairing

The placement code changes surface and subsurface blocks around the ruin, including Nether-themed patches and conditional magma. Treat the approach as part of the structure rather than walking directly toward the chest. [7]

The audited templates contain no living residents or mob-spawner blocks. Repairing a portal creates a usable travel route, but it does not clear surrounding mobs or guarantee a safe destination. [6]

Loot and rewards in Java 26.3

The Java 26.3 ruined-portal chest rolls 4-8 times from total weight 398. Obsidian, flint, iron nuggets, flint and steel, and fire charges each weigh 40. Enchanted golden apple, bell and gold-block entries each weigh 1. [9]

Golden weapons, tools and player armor use random enchantments from the on_random_loot tag; the golden horse armor entry has no enchantment modifier. The chest table is separate from the portal frame and the blocks decorating its surroundings. [9]

A second one-roll pool weighs empty 1 and lodestone 2. It can supply 1-2 lodestones, which are chest loot here rather than a guarantee that the generated portal contains a placed lodestone. The table contains no netherite or armor-trim entry. [9]

Compared directly with Java 1.20.1, the Java 26.3 tables differ. The inspected ruined portal table gains Lodestone. Use the current weights rather than carrying older chest percentages forward. [9][11]

Loot and rewards in Java 26.3
ItemWhere the rule appliesWhat the data establishes
Enchanted golden appleOne ruined-portal-table chest1.5% chance of at least one apple selection. [9][10]
ObsidianOne ruined-portal-table chest46.4% chance of at least one selection; 1-2 blocks per selection. [9][10]
Flint and steelOne ruined-portal-table chest46.4% chance of at least one selection. [9][10]
LodestoneOne ruined-portal-table chest66.7% chance; 1-2 lodestones when the separate pool selects its entry. [9][10]

Version history and release dates

These milestones retain their edition and exact build labels. Snapshot, beta and preview dates belong to those development builds; full releases and staggered Pocket platform releases are dated separately. Historical introduction claims come from the cited Wiki history. [12]

Version history and release dates
VersionReleasedWhat changed
Java 1.16 (20w16a)April 15, 2020Introduced ruined portals. [12][14]
Java 1.16 (20w17a)April 22, 2020Reduced generation frequency and stopped treating badlands portals as mountain portals. [12][15]
Java 1.16 (20w18a)April 29, 2020Reduced the golden-apple loot weight from 40 to 15. [12][16]
Bedrock 1.16.0June 23, 2020Released ruined portals after adopting blackstone Nether masonry and four to eight chest-loot rolls. [12][17]
Bedrock 1.16.100November 16, 2020 – November 17, 2020Changed glistering melon slice loot stacks to four through twelve. [12][18]
Bedrock 1.21.60February 11, 2025Added lodestones to ruined-portal chest loot. [12][19]
Java 1.21.5March 25, 2025Added lodestones to ruined-portal chest loot. [12][20]

Read the full article on the Minecraft Wiki ↗

Checked in game by SeedLookout

Screenshots

Obsidian ruined portal embedded in a badlands hillside
Ruined Portal at 2119, 74, 36Seed 28462718234064871 · Java 26.3 · overworldReference capture · Naturally generated structure, photographed in Minecraft Java 26.3.
Tall pale blue icebergs rising from a frozen ocean, a snowy shore and red trees in the distance
Ruined portal at 112, 63, 160Seed 17108149081942125 · Java 26.3
Small ruined portal with netherrack in a grassy meadow beside a pond, the village on the hill behind
Ruined portal at 100, 64, 85Seed 2734971658 · Java 1.20.1
Dark obsidian portal frame among village houses beside a river in a green valley, the sea in the distance
Ruined portal at 80, 85, 48Seed 6161254073401392 · Java 26.3
Snow-covered mountain slopes and grey cliffs with blue ice on a peak, a green hill to the right
Ruined portal at 64, 144, 288Seed -1844727049180781334 · Java 26.3

Our screenshots of naturally generated structures in Minecraft. Each caption gives the seed, coordinates and version. Select one to open it at full size.

Seeds with this ruined portal

We found each ruined portal at these coordinates in the seed's Java version. Other versions and Bedrock may generate a different world.

SeedVersionVariantX, Y, Z
Dappled forest camp on a lake shore below an ice spikes field17108149081942125Java 26.3Ruined portal112, 63, 160
Mushroom island by a coastal stone arch, with an ocean monument and trial chambers41006135150685160Java 26.3Ruined portal144, 63, 48
Pale garden on a high ridge, with a camp, an ancient city and a ruined portal in a birch forest12784623149172763Java 26.3Ruined portal80, 95, 304
Igloo on a snowy islet among ice spikes, with dappled forest and cherry trees near 0, 05644549899075441559Java 26.3Ruined portal96, 63, 16
Snowy village with a ruined portal in its streets, trail ruins and an ancient city613114469485949Java 26.3Ruined portal64, 72, 48
Pale garden camp on a cliff-edged plateau near 0, 07608428869712543Java 26.3Ruined portal0, 92, 224
Snowy village at the foot of a mountain, with an igloo and a ruined portal on the snow2550018009398761Java 26.3Ruined portal128, 74, 16
Desert zombie village on a badlands river, near a jungle temple3216445092173685Java 26.3Ruined portal208, 108, 64
Mushroom island in a frozen sea of icebergs-7078951977818456085Java 26.3Ruined portal32, 63, -464
Zombie village in a river valley, with a jungle ruined portal among its houses6161254073401392Java 26.3Ruined portal80, 85, 48
Plains village on a sea cliff, above a bay with a shipwreck and an ocean portal13356518562158768Java 26.3Ruined portal112, 63, 0
Pale garden camp on a hilltop below a flat-topped rock, with snowy peaks behind17202526513719721Java 26.3Ruined portal0, 63, 16
Show 85 more seedsShow fewer seeds12 of 97
SeedVersionVariantX, Y, Z
Seaside desert village, with a desert ruined portal and Sulfur Caves near 0, 0871578676041918Java 26.3Ruined portal0, 69, 64
Taiga village with docks on a sandy bay, and an ocean ruined portal offshore2311978434985311Java 26.3Ruined portal96, 63, 96
Woodland mansion by a river in dark forest with giant mushrooms, and a taiga village23449166200361261Java 26.3Ruined portal224, 78, 80
Desert village on a green bay at the jungle edge, with a jungle ruined portal3369163785663072Java 26.3Ruined portal144, 65, 32
Plains village on a bay facing icebergs, above the Sulfur Caves and trial chambers244773005486829Java 26.3Ruined portal0, 69, 0
Ocean monument between a jungle coast and a mushroom island17036737413726777Java 26.3Ruined portal-288, 63, 304
Sparse jungle abandoned camp between rivers, with a shipwreck and a deeply buried ruined portal857638595174584Java 26.3Ruined portal64, 79, -256
Plains village on a coastal point, with a ruined portal at its edge and a buried beached shipwreck19265529694398426Java 26.3Ruined portal16, 65, 48
Dappled forest camp on a ridge by cherry trees, with a plains village at the forest edge5096246946705467Java 26.3Ruined portal-272, 99, 16
Dappled forest camp on stony river hills, with ice spikes among the dappled trees1332568118536636Java 26.3Ruined portal96, 83, 384
Pale garden camp on a hilltop at y 129, beside jungle slopes and giant red mushrooms6288608918385347Java 26.3Ruined portal64, 69, 192
Mushroom island offshore, with a pillager outpost by a dappled forest5096040350616420880Java 26.3Ruined portal48, 72, -272
Desert village between rivers and badlands, over trial chambers and lush caves707389573096835Java 26.3Ruined portal80, 63, 272
Coral coast with a shipwreck and desert ruined portal, and a jungle temple inland59908773697188Java 26.3Ruined portal32, 63, 32
Ruined portal on a frozen-sea islet, near a snowy village and a shipwreck among icebergs17833430277517662Java 26.3Ruined portal0, 63, 64
Pale garden camp on a high ridge, above a river through dark forest4895472382419828Java 26.3Ruined portal128, 63, 160
Snowy village by an ice spike river, with a pillager outpost and a tall ruined portal3086673498097895Java 26.3Ruined portal-256, 70, 96
Taiga village on a high spruce plateau below a snowy peak, with a camp and portal700138229128108Java 26.3Ruined portal48, 107, 112
Snowy taiga camp under a rock spire, next to a snowy village on a frozen lake690525251047146Java 26.3Ruined portal144, 76, 176
Igloo on a stone column in a frozen gorge, with a meadow camp on a high hill399918057248930Java 26.3Ruined portal-368, 69, 80
Savanna village in a badlands canyon, with a jungle temple in bamboo457518450142132Java 26.3Ruined portal0, 76, 0
Snowy village among ice spikes and frozen ponds, with an igloo above trial chambers328492470042664Java 26.3Ruined portal32, 63, 32
Dappled forest camp on a lake shore under snowy mountains, with a plains village19170884564763712Java 26.3Ruined portal240, 100, 16
Snowy village on an island in a frozen sea, with a beached shipwreck and a hilltop portal6656936858446620Java 26.3Ruined portal48, 70, 32
Long mushroom island near an ocean monument, with a sunken ruined portal and shipwreck9141707267233856Java 26.3Ruined portal160, 63, 384
Pale garden camp at y 141 on a forested hilltop, with a trial chamber and buried portal19180464107149712Java 26.3Ruined portal160, 77, 288
Riverside dappled forest camp, with a hilltop village among cherry trees2461477476460289Java 26.3Ruined portal160, 26, 112
Mountain ruined portal in the shallows off a forested island, near an ocean monument839695448267121Java 26.3Ruined portal48, 63, 16
Pale garden abandoned camp on a hilltop, with a ruined portal below the cliff1697828004813856Java 26.3Ruined portal0, 102, 112
Sandy islets over a sunken shipwreck, with a coastal plains village1074557468761508Java 26.3Ruined portal48, 64, 16
Snowy village beside an ice spikes field, with a pillager outpost to the east200203700853529Java 26.3Ruined portal112, 63, 48
Dappled forest camp on a hilltop, with a ruined portal beside cherry trees17277575243043769Java 26.3Ruined portal48, 111, 192
Dappled forest along a river, with a camp and a ruined portal in the trees4540005795369143Java 26.3Ruined portal144, 74, 144
Savanna village by a river with trial chambers underneath98921779325618Java 26.3Ruined portal-256, 63, 64
Desert village on a river beside jungle hills, with lush caves nearby1214737611781281Java 26.3Ruined portal112, 77, 304
Taiga village climbing a steep cliff above a river, with trail ruins beneath3481099971675538Java 26.3Ruined portal16, 63, 128
Ruined portal on the edge of a taiga village in old growth spruce forest667406256774050Java 26.3Ruined portal16, 76, 16
Forest abandoned camp next to a ruined portal by a river64630255946901Java 26.3Ruined portal0, 72, 48
Desert pyramid at the edge of a desert village, with a ruined portal beside it28462718234064871Java 26.3Ruined portal80, 71, 96
Village with a pier house on a seagrass bay, and a beached wreck22708861381133973Java 26.3Ruined portal80, 63, 32
Swamp hut in the middle of a plains village1748729253401579425Java 26.3Ruined portal224, 72, 16
Desert village at the edge of the badlands, with an outpost911279098436064Java 26.3Ruined portal64, 69, 176
Ruined portal on a mushroom island, with an ocean monument7225203405476503Java 26.3Ruined portal112, 79, 128
Taiga village on a lake point, with a camp among its houses13213665042628Java 26.3Ruined portal-256, 90, 208
Igloo on a snowy beach by an iceberg, with a taiga village1448753197383953Java 26.3Ruined portal80, 63, 128
Island camp below a waterfall cliff, with a frozen ocean shipwreck662855608430780Java 26.3Ruined portal48, 63, 16
Plains village on a high plateau, with an igloo on snowy slopes841762255836736Java 26.3Ruined portal112, 69, -352
Dappled forest and cherry grove between snowy peaks, over an ancient city-1844727049180781334Java 26.3Ruined portal64, 144, 288
Snowy village on a frozen bay with a sunken shipwreck287917627035206Java 26.3Ruined portal256, 93, 144
Dappled forest on a river gorge with a ruined portal and shipwreck-45894559684827540Java 26.3Ruined portal240, 63, 0
Snowy abandoned camp on a bay, with a dappled forest peak13534325829278682Java 26.3Ruined portal32, 72, 144
Abandoned camp in a badlands valley with a giant ruined portal109062250015565Java 26.3Ruined portal48, 100, 176
Ocean monument between a mushroom island and a desert coast38756481678573377Java 26.3Ruined portal80, 63, 16
Jungle coast with a jungle temple, giant ruined portal and shipwreck1282831805522879Java 26.3Ruined portal80, 71, 32
Swamp abandoned camp on a cliff ledge, with a ruined portal353826866681393Java 26.3Ruined portal48, 64, 48
Abandoned camp in a pale garden with an ancient city nearby1919394327020867Java 26.3Ruined portal208, 120, 224
Cherry blossom village with a ruined portal4748201382291164172Java 1.20.1Ruined portal0, 93, 0
Abandoned zombie village beside a cherry grove2734971658Java 1.20.1Ruined portal100, 64, 85
Savanna village with a ruined portal4017579Java 1.20.1Ruined portal0, 66, 0
Taiga village with a ruined portal in the middle3598728236Java 1.20.1Ruined portal0, 66, 0
Two plains villages and a ruined portal4698916Java 1.20.1Ruined portal-350, 64, 225
Plains village on a peninsula with a shore ruined portal12394174394252381Java 26.3Ruined portal0, 64, 48
Savanna camp and pillager outpost beside a river975811416019541Java 26.3Ruined portal128, 73, 32
Plains village paths through a swamp below green hills286640949242730905Java 26.3Ruined portal176, 63, 96
Desert temple and sandstone village at a badlands shore635482260673531Java 26.3Ruined portal32, 72, 16
Taiga village along a stone shore with a forest tent22100628170373403Java 26.3Ruined portal96, 87, 96
Plains village on rolling coastal hills above a river150790707761055Java 26.3Ruined portal16, 63, 112
Desert village between high dunes and a jungle edge3035361386383305Java 26.3Ruined portal80, 66, 64
Open plains village and an outpost below a river cliff183507361551918Java 26.3Ruined portal16, 71, 0
White tent in tall spruce forest with a shoreline wreck86660878744450Java 26.3Ruined portal112, 63, 48
Village over coastal water with a camp on the cliff ridge2138578190124275Java 26.3Ruined portal112, 63, 16
Shipwreck at a sandy river mouth near a savanna village253918772807666Java 26.3Ruined portal64, 63, 32
Swamp camp and riverside village below rocky spires423428296863212Java 26.3Ruined portal-272, 84, 208
Coastal taiga village and portal below a narrow rock spire186307584437646Java 26.3Ruined portal48, 77, 32
Taiga village between snowy forest and swamp water525879814561908518Java 26.3Ruined portal224, 63, 48
Waterfront village below rocky cliffs and narrow spires440719661528502662Java 26.3Ruined portal96, 66, 48
White camp tent on a winding river through tall spruce887266562840117Java 26.3Ruined portal64, 63, 80
Dappled coastal forest with a camp and waterside portal6863001104749494Java 26.3Ruined portal16, 63, 336
Riverside plains village and an outpost on grassy hills4329197876656961Java 26.3Ruined portal256, 66, 80
Ocean monument among icebergs beside a mushroom shore29091098865339477Java 26.3Ruined portal128, 63, -304
Mushroom-covered coast across the water from icebergs-7222111417440254417Java 26.3Ruined portal-304, 63, 176
Mushroom shore with a submerged monument and copper chambers-963374613974828980Java 26.3Ruined portal304, 63, 352
Mushroom shore beside an ocean monument and sunken portal3721475279528813Java 26.3Ruined portal208, 63, -288
Desert village on a river bend with trial chambers below1692345640347606Java 26.3Ruined portal96, 69, 352
White camp tent under dappled forest on the coast942290479523733Java 26.3Ruined portal0, 63, -256

Sources

References identify the edition, version and evidence behind the guide. Game code and data describe generation rules; the seed table records locations checked in game. Research reviewed 2026-10-02.

  1. Mojang Java 26.3: structure configuration ↗Official game data · Java 26.3

    Inner archive META-INF/versions/26.3/server-26.3.jar: data/minecraft/worldgen/structure/ruined_portal.json; data/minecraft/worldgen/structure/ruined_portal_desert.json; data/minecraft/worldgen/structure/ruined_portal_jungle.json; data/minecraft/worldgen/structure/ruined_portal_mountain.json; data/minecraft/worldgen/structure/ruined_portal_nether.json; data/minecraft/worldgen/structure/ruined_portal_ocean.json; data/minecraft/worldgen/structure/ruined_portal_swamp.json

    Evidence details

    Official server SHA-1 33680f5f2ac32864d6d7cf5e56a705fdb3e05f4c. SHA-256 by archive member: data/minecraft/worldgen/structure/ruined_portal.json = e8151a138c44a5c75c5dc4b84883ebb596ae90eca15f44e77149f710bf9a61b7; data/minecraft/worldgen/structure/ruined_portal_desert.json = 3e635eb9c50196cd332ff5cd1783b3bea0f908c3a187a9dead0b330efd456af2; data/minecraft/worldgen/structure/ruined_portal_jungle.json = 257ef8e3ab68fd0bb2176c2e0c420ef547a1f2b2e915a215ec74341362f759e5; data/minecraft/worldgen/structure/ruined_portal_mountain.json = b0eff0c4a476090c5e6fb099457856cdeff582dd26b864f44d254284ae9d75be; data/minecraft/worldgen/structure/ruined_portal_nether.json = f2fcfb0c13fbe2dc7054aa23e5c19c4a5994cbc600c6e42062c4a078df364c20; data/minecraft/worldgen/structure/ruined_portal_ocean.json = 048d15c54b4ea2a517492da1e8b8d339a474bc81311303675f211b717b2bd4a9; data/minecraft/worldgen/structure/ruined_portal_swamp.json = 45c63cd9db34f4cba3b27817a763556b4bfdf29f6500425b47477ec50d60aa13

  2. Mojang Java 26.3: resolved starting-biome tags ↗Official game data · Java 26.3

    Inner archive META-INF/versions/26.3/server-26.3.jar: data/minecraft/tags/worldgen/biome/has_structure/ruined_portal_desert.json; data/minecraft/tags/worldgen/biome/has_structure/ruined_portal_jungle.json; data/minecraft/tags/worldgen/biome/has_structure/ruined_portal_mountain.json; data/minecraft/tags/worldgen/biome/has_structure/ruined_portal_nether.json; data/minecraft/tags/worldgen/biome/has_structure/ruined_portal_ocean.json; data/minecraft/tags/worldgen/biome/has_structure/ruined_portal_standard.json; data/minecraft/tags/worldgen/biome/has_structure/ruined_portal_swamp.json; data/minecraft/tags/worldgen/biome/is_badlands.json; data/minecraft/tags/worldgen/biome/is_beach.json; data/minecraft/tags/worldgen/biome/is_deep_ocean.json; data/minecraft/tags/worldgen/biome/is_forest.json; data/minecraft/tags/worldgen/biome/is_hill.json; data/minecraft/tags/worldgen/biome/is_jungle.json; data/minecraft/tags/worldgen/biome/is_mountain.json; data/minecraft/tags/worldgen/biome/is_nether.json; data/minecraft/tags/worldgen/biome/is_ocean.json; data/minecraft/tags/worldgen/biome/is_river.json; data/minecraft/tags/worldgen/biome/is_taiga.json

    Evidence details

    Official server SHA-1 33680f5f2ac32864d6d7cf5e56a705fdb3e05f4c. SHA-256 by archive member: data/minecraft/tags/worldgen/biome/has_structure/ruined_portal_desert.json = 594283bb70e915f9eee7b58179d48940b60b1167057181659ee31c9c0df97bb7; data/minecraft/tags/worldgen/biome/has_structure/ruined_portal_jungle.json = 072faff2cb4d001d13c0575e15099dceb3fe96ea0cd24edbba3bec815ea3ab27; data/minecraft/tags/worldgen/biome/has_structure/ruined_portal_mountain.json = 22d233c68333f254da4734490b43ef625814a4f525f1bb6488e7ed9fb1423581; data/minecraft/tags/worldgen/biome/has_structure/ruined_portal_nether.json = 61876e4e6ea82be32485b15b18bbe420dc4eda30dd603fea31965eb63a3dc0eb; data/minecraft/tags/worldgen/biome/has_structure/ruined_portal_ocean.json = 90c1397d9c54faf76cfb6d148aa497e8ffcb88523a9c5ec6baf4bc33661efd57; data/minecraft/tags/worldgen/biome/has_structure/ruined_portal_standard.json = 86767a1f1fb3fd4dd6123cc6333e23fc1a771de7c625db1e28d21d42954019fc; data/minecraft/tags/worldgen/biome/has_structure/ruined_portal_swamp.json = d6be84f238a9f362222daff4dee7cc7ab52c6dcfe9327190f1fd091dd74bb446; data/minecraft/tags/worldgen/biome/is_badlands.json = 018be7eee89d60f4c844797b6d66b7226738c1c20ac72020b82a50bf9e140f6b; data/minecraft/tags/worldgen/biome/is_beach.json = ce247502128c04e5999203db4139eaa317fe3586e62c671a0bd22ed3f792aea1; data/minecraft/tags/worldgen/biome/is_deep_ocean.json = 5c8de7b8025f2a7f93887aeeca0a5af1bf67f58004031742e082a16302c7a783; data/minecraft/tags/worldgen/biome/is_forest.json = 67e7a7611d9633a31182bb1b8a109cc04f959996d0cf5fbd4369460543ded7b5; data/minecraft/tags/worldgen/biome/is_hill.json = 040147f6b9e0a52e5f3296cae881774225ceba247ac7bc96a4636841d3c5302a; data/minecraft/tags/worldgen/biome/is_jungle.json = f753b2d91f0a5b2ed96d25dbb65d5c23527131e6c7d20677dc805a2742268df4; data/minecraft/tags/worldgen/biome/is_mountain.json = da761310afa4c0a9cd978036150b91ecb0c427e65192d4d60486eb7206b03fe4; data/minecraft/tags/worldgen/biome/is_nether.json = da1035d0fe19ee941dbb288d23e1cf5400c03ec4d2bef9a90d6300191dc9593a; data/minecraft/tags/worldgen/biome/is_ocean.json = e86dbd183dbfc27044b1e9bfd9892f1098284cbf45e28d3218c9e45fcbd1a895; data/minecraft/tags/worldgen/biome/is_river.json = e710cc66051a66f2383bfd1d40a95c9c58334127792d5db832ecaf233627e054; data/minecraft/tags/worldgen/biome/is_taiga.json = ddabb0fa36936b6c10fdbf5822644f3f5a890203b49e426ed92e98982527049b

  3. Mojang Java 26.3: candidate placement settings ↗Official game data · Java 26.3

    Inner archive META-INF/versions/26.3/server-26.3.jar: data/minecraft/worldgen/structure_set/ruined_portals.json

    Evidence details

    Official server SHA-1 33680f5f2ac32864d6d7cf5e56a705fdb3e05f4c. SHA-256 by archive member: data/minecraft/worldgen/structure_set/ruined_portals.json = 153eddf906448b98a51d8adff2345f5682de0d4244a68aa114d3798621721613

  4. Mojang Java 26.3: candidate filtering and weighted retries ↗Decompiled game implementation · Java 26.3

    Inner archive META-INF/versions/26.3/server-26.3.jar: net/minecraft/world/level/chunk/ChunkGenerator.class; net/minecraft/world/level/levelgen/structure/placement/AbstractSpreadingStructurePlacement$ExclusionZone.class; net/minecraft/world/level/levelgen/structure/placement/AbstractSpreadingStructurePlacement$FrequencyReducer.class; net/minecraft/world/level/levelgen/structure/placement/AbstractSpreadingStructurePlacement$FrequencyReductionMethod.class; net/minecraft/world/level/levelgen/structure/placement/AbstractSpreadingStructurePlacement.class; net/minecraft/world/level/levelgen/structure/placement/RandomSpreadStructurePlacement.class. Methods: RandomSpreadStructurePlacement.getPotentialStructureChunk; AbstractSpreadingStructurePlacement.isStructureChunk; ChunkGenerator.createStructures / tryGenerateStructure

    Evidence details

    Official server SHA-1 33680f5f2ac32864d6d7cf5e56a705fdb3e05f4c. Implementation inspected using CFR 0.152; reconstructed Java is not an original Mojang source publication. SHA-256 by archive member: net/minecraft/world/level/chunk/ChunkGenerator.class = 7e5145ec6e36cbc7af979e869d4947c85e4715b8d13105f1369f0a385c40851d; net/minecraft/world/level/levelgen/structure/placement/AbstractSpreadingStructurePlacement$ExclusionZone.class = eb0d49eb1ffb0714fbdb04abde954fbdbd50cfeafd411f593de8159a06488300; net/minecraft/world/level/levelgen/structure/placement/AbstractSpreadingStructurePlacement$FrequencyReducer.class = e2887ebf5f8937ca3b038d6e1c40bc1c77f983a97b5b7ed9bdcd78b59d103e82; net/minecraft/world/level/levelgen/structure/placement/AbstractSpreadingStructurePlacement$FrequencyReductionMethod.class = 3664480026b9e91c8235bdbf6d98fdbbb78586f8d0decee70f9ea788d3291a71; net/minecraft/world/level/levelgen/structure/placement/AbstractSpreadingStructurePlacement.class = 0775a5cd47242fafd7f9977a9cfb821a6fffe5d1defcbc3bf8cded7e2427a4a8; net/minecraft/world/level/levelgen/structure/placement/RandomSpreadStructurePlacement.class = 8fbeed7711f96285b9b39b2e8363ffaa6ea80dd03baea4c1e6fa98e90b7f8eb9

  5. Mojang Java 26.3: generation entry points ↗Decompiled game implementation · Java 26.3

    Inner archive META-INF/versions/26.3/server-26.3.jar: net/minecraft/world/level/levelgen/structure/Structure$GenerationContext.class; net/minecraft/world/level/levelgen/structure/Structure$GenerationStub.class; net/minecraft/world/level/levelgen/structure/Structure$StructureSettings$Builder.class; net/minecraft/world/level/levelgen/structure/Structure$StructureSettings.class; net/minecraft/world/level/levelgen/structure/Structure.class; net/minecraft/world/level/levelgen/structure/structures/RuinedPortalStructure$Setup.class; net/minecraft/world/level/levelgen/structure/structures/RuinedPortalStructure.class. Methods: RuinedPortalStructure.findGenerationPoint; Structure.findValidGenerationPoint; Structure.GenerationContext.isValidBiome

    Evidence details

    Official server SHA-1 33680f5f2ac32864d6d7cf5e56a705fdb3e05f4c. Implementation inspected using CFR 0.152; reconstructed Java is not an original Mojang source publication. SHA-256 by archive member: net/minecraft/world/level/levelgen/structure/Structure$GenerationContext.class = 0c4335baa022b0482299b5cc0a3d0492fd3160542640b2538a5b8934822cc12b; net/minecraft/world/level/levelgen/structure/Structure$GenerationStub.class = e7a25f7418cfbfafaa6ecc1558a4bacde160ab247be6997df4aef3288da76a52; net/minecraft/world/level/levelgen/structure/Structure$StructureSettings$Builder.class = e9b9a37f14f156749ceb686ab31f34954c3b65c0e9f1ff43cdebb508a72b1261; net/minecraft/world/level/levelgen/structure/Structure$StructureSettings.class = 5796d330ef7ea491ee64b34ccdfe6c08a62b71886441bd87cd327a2fc6188f80; net/minecraft/world/level/levelgen/structure/Structure.class = fa023ce735376b7042242948275a0869a7e22d30e5e4c5c6502b521578577188; net/minecraft/world/level/levelgen/structure/structures/RuinedPortalStructure$Setup.class = 1f62384bcb7488bb4474a2baa16da4cf46429d066f75a34dd5012a218587d246; net/minecraft/world/level/levelgen/structure/structures/RuinedPortalStructure.class = 4754f99a816eb6b1f4a602511265f5032b55ffac567c6f09677c79c06f8c5720

  6. Mojang Java 26.3: ruined portal templates and data ↗Official game data · Java 26.3

    data/minecraft/worldgen/structure/ruined_portal.json; data/minecraft/worldgen/structure/ruined_portal_desert.json; data/minecraft/worldgen/structure/ruined_portal_jungle.json; data/minecraft/worldgen/structure/ruined_portal_mountain.json; data/minecraft/worldgen/structure/ruined_portal_nether.json; data/minecraft/worldgen/structure/ruined_portal_ocean.json; data/minecraft/worldgen/structure/ruined_portal_swamp.json; data/minecraft/structure/ruined_portal/**/*.nbt

    Evidence details

    Official server SHA-1 33680f5f2ac32864d6d7cf5e56a705fdb3e05f4c; inner META-INF/versions/26.3/server-26.3.jar SHA-256 a362163eec5d1612d520772bc16e5b39c09e3b234fdc045f56bf544284ee8ae6. NBT dimensions are unrotated saved template bounds (X × Y × Z), including air and connectors, not usable interior dimensions.

  7. Mojang Java 26.3: ruined portal layout and encounter implementation ↗Decompiled game implementation · Java 26.3

    net.minecraft.world.level.levelgen.structure.structures.RuinedPortalPiece; RuinedPortalPiece.postProcess, spreadNetherrack, placeNetherrackOrMagma; ruined_portal/portal_1..10.nbt and giant_portal_1..3.nbt.

    Evidence details

    Official server SHA-1 33680f5f2ac32864d6d7cf5e56a705fdb3e05f4c; inner META-INF/versions/26.3/server-26.3.jar SHA-256 a362163eec5d1612d520772bc16e5b39c09e3b234fdc045f56bf544284ee8ae6. Official bytecode inspected through CFR 0.152; reconstructed implementation, not an original source checkout.

  8. Minecraft Wiki: Ruined Portal ↗Minecraft Wiki · Java and Bedrock Revision 3787536

    Pinned article revision 3787536

    Evidence details

    Community description at the pinned revision; edition differences are retained where relevant.

  9. Mojang Java 26.3: ruined portal loot data ↗Official game data · Java 26.3

    Inner META-INF/versions/26.3/server-26.3.jar: data/minecraft/loot_table/chests/ruined_portal.json

    Evidence details

    Verified official server SHA-1 33680f5f2ac32864d6d7cf5e56a705fdb3e05f4c. File SHA-256s: ruined_portal.json: 3c4f5b7f457b075817c62ec727077a6834e4ee73eaef599027e78570c355087d. Table identity and conditional item rules are distinct from any particular generated container.

  10. Java 26.3 ruined portal: calculated selection odds ↗Calculated from game data · Java 26.3

    Relevant /pools indices in the data reference; LootPool.addRandomItem/addRandomItems; UniformContainerBase.uniformFields; UniformGenerator.getIntUnsafe.

    Evidence details

    For direct unconditional weighted pools, chance of at least one selection is 1 minus the average of (1−weight/totalWeight)^n over inclusive uniform integer rolls. Values are theoretical table-invocation probabilities, not seed frequencies. Exact inputs: [{"itemId":"minecraft:enchanted_golden_apple","table":"data/minecraft/loot_table/chests/ruined_portal.json","pool":0,"fraction":"47140544330237741389/3147998965187991553280","chance":0.01497476487493782,"weight":1,"total":398,"rolls":[4,5,6,7,8]},{"itemId":"minecraft:obsidian","table":"data/minecraft/loot_table/chests/ruined_portal.json","pool":0,"fraction":"1142073779645849480/2459374191553118401","chance":0.46437576826185156,"weight":40,"total":398,"rolls":[4,5,6,7,8]},{"itemId":"minecraft:flint_and_steel","table":"data/minecraft/loot_table/chests/ruined_portal.json","pool":0,"fraction":"1142073779645849480/2459374191553118401","chance":0.46437576826185156,"weight":40,"total":398,"rolls":[4,5,6,7,8]},{"itemId":"minecraft:lodestone","table":"data/minecraft/loot_table/chests/ruined_portal.json","pool":1,"fraction":"2/3","chance":0.6666666666666666,"weight":2,"total":3,"rolls":[1]}]

  11. Mojang Java 1.20.1: inspected historical ruined portal loot ↗Official game data · Java 1.20.1

    data/minecraft/loot_tables/chests/ruined_portal.json

    Evidence details

    Limited comparison of the listed data files; no claim that all intermediate releases share either table. SHA-256s: ruined_portal.json: 3e5e2a0583273236f3f632e8588199cd990602f2b7a1c6336aaa12954b18585f

  12. Minecraft Wiki: Ruined Portal — pinned history ↗Minecraft Wiki · Java and Bedrock Revision 3787536

    History section, retaining edition, release grouping, development-version and experimental-toggle qualifiers.

    Evidence details

    Pinned article revision 3787536 from 2026-09-21T15:07:44Z. Historical claims only; not an audited game build or release-date source.

  13. Minecraft Wiki: Ruined Portal description ↗Minecraft Wiki · Java and Bedrock revision 3787536

    Opening description and History

    Evidence details

    Pinned article revision 3787536; retrieved October 1, 2026. Article history supports historical introductions; current generation and loot are audited separately from game data.

  14. Java 1.16 (20w16a): release date ↗Official game data · Java 1.16 (20w16a)

    /id; /releaseTime

    Evidence details

    Date belongs to the exact 20w16a build. Snapshot and prerelease dates are separate from the later full release; metadata does not prove the feature introduction.

  15. Java 1.16 (20w17a): release date ↗Official game data · Java 1.16 (20w17a)

    /id; /releaseTime

    Evidence details

    Date belongs to the exact 20w17a build. Snapshot and prerelease dates are separate from the later full release; metadata does not prove the feature introduction.

  16. Java 1.16 (20w18a): release date ↗Official game data · Java 1.16 (20w18a)

    /id; /releaseTime

    Evidence details

    Date belongs to the exact 20w18a build. Snapshot and prerelease dates are separate from the later full release; metadata does not prove the feature introduction.

  17. Bedrock 1.16.0: release date ↗Minecraft Wiki · Bedrock 1.16.0

    Version infobox release date

    Evidence details

    Platform releases were staggered: June 23, 2020<ref name="nether-release">{{cite|url=https://feedback.minecraft.net/hc/en-us/articles/360044928311|title=Minecraft - Nether Update - 1.16.0 (Bedrock)|date=June 23, 2020}}</ref>. These dates describe full Pocket releases, separately from earlier betas.

  18. Bedrock 1.16.100: release date ↗Minecraft Wiki · Bedrock 1.16.100

    Version infobox release date

    Evidence details

    Platform releases were staggered: Nintendo Switch: November 16, 2020; Android, iOS, iPadOS, Windows 10, Fire OS, Xbox One, PS4: November 17, 2020

  19. Bedrock 1.21.60: release date ↗Minecraft Wiki · Bedrock 1.21.60

    Version infobox release date

    Evidence details

    Pinned community version article date; snapshots, betas and previews have their own release dates, separately from the full version.

  20. Java 1.21.5: release date ↗Official game data · Java 1.21.5

    /id; /releaseTime

    Evidence details

    Date belongs to the exact 1.21.5 build. Snapshot and prerelease dates are separate from the later full release; metadata does not prove the feature introduction.

Item art uses vanilla Java 26.3 assets from the official client release. Icons retain their game version alongside the guide.

Descriptions adapted from the Minecraft Wiki retain its attribution under CC BY-NC-SA 3.0. Calculations and code analysis are SeedLookout research. Screenshot captions identify each capture. The seed table contains our published verified seeds; checking a location does not establish particular room contents or chest loot.