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Ruined Portal near Village-Spawn

A ruined portal in Bedrock Edition.

A ruined portal is a naturally generated damaged nether portal, which spawns in both the Nether and the Overworld. It contains some decoration and a loot chest around it.

Generation

Ruined Portal underside in water

Underside of a ruined portal

Ruined portals generate in all biomes in both the Nether and the Overworld. They can spawn underground, underwater, or exposed to the air. If they generate underground, they have air pockets around them. Natural terrain around ruined portals generates as netherrack. They also generate a mass of netherrack underneath them (including "stalactite"-like shapes, and this may contain blackstone deposits in the Nether). Giant ruined portals have 3 distinct designs, and normal ruined portals have 10 designs. When a ruined portal generates, it has a 5% chance to be a giant ruined portal, for about a 1.67% chance per giant portal design. This gives normal ruined portals a 95% chance, for a 9.5% chance per normal ruined portal design.[more information needed]

Biome
Standard Desert Jungle Swamp Mountain Ocean Nether
Vertical
placement
Underground
(50%)
Surface
(50%)
Partly buried Surface Ocean floor In mountain
(50%)
Surface
(50%)
Ocean floor Nether
Mossiness 0.2 0 0.8 0.5 0.2 0.8 0
Air Pocket Yes 50% No 50% No Yes 50% No 50%
Overgrown No No Yes No No No No
Vines No No Yes Yes No No No
Blackstone No No No No No No Yes

Ruined portals that generate underground do so at Y-level from 15 to n−n2, where n is the highest block at the point of generation and n2 is the height of the ruined portal structure. This means the terrain is always higher than or level with the top of the structure.

Ruined portals that generate in mountains generate at y-level from 70 to n−n2.

Ruined portals that generate partially buried do so at y-level n−n2, plus a random integer from 2 to 8. This means that the structure has 2 to 8 layers raised above the surface.

In the Nether, ruined portals with air pockets generate from Y-level 32 to 100. Ruined portals without air pockets have a 50% chance to spawn from Y-level 27 to 29, and a 50% chance to spawn from Y-level 29 to 100.

Many blocks in ruined portals are replaced upon generation. A ruined portal is in a snowy biome if the temperature is less than 0.15.

Original Block Replacing Block Chance per Block
Block of Gold Air 30%
Lava Magma Block On ocean floor: 100%
Not on ocean floor: 20%
Cold: 0%
Netherrack Cold: 100%
Not cold: 0%
Netherrack[n 1] Magma Block Not Cold: 7%
Cold: 0%
Obsidian Crying Obsidian 15%

Stone
Stone Bricks
Chiseled Stone Bricks

Cracked Stone Bricks
Stone Brick Stairs

50%×(1-Mossiness)

Mossy Stone Bricks
Mossy Stone Brick Stairs

50%×Mossiness
Any Slabs Mossy Stone Brick Slab Mossiness
Any Stairs

Stone Slab
Stone Brick Slab

50%×(1-Mossiness)

Mossy Stone Brick Stairs
Mossy Stone Brick Slab

50%×Mossiness
Any Walls Mossy Stone Brick Wall Mossiness
  1. This includes netherrack generated as part of the netherrack "spread" through nearby terrain.

Structure

Main article: /Structure

Ruined portals generate incomplete portal frames composed of both obsidian and crying obsidian. Note that nether portals cannot be activated with crying obsidian in the frame.[1] Some frames generate flat on the ground, as if they toppled over. Others are free-standing separately, as if still being assembled /attached.

All ruined portals generate with a chest (quite-possibly replaced by magma block or lava in a giant - or regular - portal under-lava), which contain various golden items and items used to build portals such as obsidian and flint and steel.

Any ruined portal generated in the Overworld is surrounded with structures made of stone, stone bricks, and iron bars; in the Nether it is surrounded by blackstone variants and chains.

Currently there are 13 variants: 10 normal size portals and 3 giant portals in varying states of decay.

In Java Edition, ruined portals can be generated by the player by loading ruined_portal/portal_<1 to 10> or ruined_portal/giant_portal_<1 to 3> with a structure block. These ruined portals generate as they are stored, meaning they are not modified as detailed in the Generation section above. All portals generated this way create air pockets if generated in other blocks.

Portals

Note that some blocks are replaced with others upon generation. A full list can be seen above.

Structure name Description Consists of Image
ruined_portal/giant_portal_1 A large incomplete portal.

263 Template:BlockText
63 Template:BlockText
38 Template:BlockText
31 Template:BlockText
20 Template:BlockText
18 Template:BlockText
11 Template:BlockText
4 Template:BlockText
2 Template:BlockText
1 Template:BlockText

File:Overworld Giant Ruined Portal 1.png

ruined_portal/giant_portal_2 A large incomplete portal.

237 Template:BlockText
55 Template:BlockText
30 Template:BlockText
29 Template:BlockText
22 Template:BlockText
19 Template:BlockText
18 Template:BlockText
6 Template:BlockText
2 Template:BlockText
1 Template:BlockText

File:Giant portal 2.png

ruined_portal/giant_portal_3 A large incomplete portal, with the most gold blocks, separate obsidian.

324 Template:BlockText
51 Template:BlockText
40 Template:BlockText
33 Template:BlockText
25 Template:BlockText
22 Template:BlockText
6 Template:BlockText
6 Template:BlockText
6 Template:BlockText
1 Template:BlockText

File:Giant portal 3.png

ruined_portal/portal_1 A small incomplete portal, with stone slabs and no lava.

55 Template:BlockText
11 Template:BlockText
10 Template:BlockText
9 Template:BlockText
7 Template:BlockText
6 Template:BlockText
3 Template:BlockText
2 Template:BlockText
1 Template:BlockText
1 Template:BlockText
1 Template:BlockText

File:Overworld Ruined Portal 1.png

ruined_portal/portal_2 A hanging incomplete portal.

115 Template:BlockText
26 Template:BlockText
19 Template:BlockText
14 Template:BlockText
11 Template:BlockText
10 Template:BlockText
4 Template:BlockText
2 Template:BlockText
2 Template:BlockText
1 Template:BlockText
1 Template:BlockText
1 Template:BlockText

File:Ruined portal 2.png

ruined_portal/portal_3 A small incomplete portal, with no gold block.

132 Template:BlockText
36 Template:BlockText
16 Template:BlockText
11 Template:BlockText
2 Template:BlockText
1 Template:BlockText

File:Ruined portal 3.png

ruined_portal/portal_4 A small incomplete portal.

130 Template:BlockText
36 Template:BlockText
16 Template:BlockText
11 Template:BlockText
3 Template:BlockText
1 Template:BlockText
1 Template:BlockText

File:Ruined portal 4.png

ruined_portal/portal_5 A small portal, where the top of the portal has fallen over.

145 Template:BlockText
22 Template:BlockText
15 Template:BlockText
12 Template:BlockText
6 Template:BlockText
5 Template:BlockText
3 Template:BlockText
2 Template:BlockText
1 Template:BlockText
1 Template:BlockText
1 Template:BlockText
1 Template:BlockText

File:Ruined portal 5.png

ruined_portal/portal_6 A 5x5 portal, where the top center block is misplaced.

41 Template:BlockText
16 Template:BlockText
4 Template:BlockText
2 Template:BlockText
1 Template:BlockText
1 Template:BlockText

File:Ruined portal 6.png

ruined_portal/portal_7 An incomplete portal submerged in lava.

92 Template:BlockText
21 Template:BlockText
12 Template:BlockText
3 Template:BlockText
2 Template:BlockText
1 Template:BlockText
1 Template:BlockText
1 Template:BlockText

File:Ruined portal 7.png

ruined_portal/portal_8 An incomplete portal at the top of a staircase. The top has fallen into lava.

144 Template:BlockText
26 Template:BlockText
17 Template:BlockText
14 Template:BlockText
6 Template:BlockText
4 Template:BlockText
3 Template:BlockText
2 Template:BlockText
1 Template:BlockText
1 Template:BlockText

File:Ruined portal 8.png

ruined_portal/portal_9 A small incomplete portal.

63 Template:BlockText
12 Template:BlockText
11 Template:BlockText
2 Template:BlockText
1 Template:BlockText
1 Template:BlockText
1 Template:BlockText

File:Ruined portal 9.png

ruined_portal/portal_10 An incomplete portal that has fallen backward into lava.

123 Template:BlockText
19 Template:BlockText
13 Template:BlockText
13 Template:BlockText
3 Template:BlockText
3 Template:BlockText
3 Template:BlockText
2 Template:BlockText
1 Template:BlockText

File:Ruined portal 10.png

Blocks

All ruined portals Overworld Nether

Loot

In Java Edition, each ruined portal chest contains 4–8 item stacks, with the following distribution:

Item Stack Size [A] Weight [B] Chance [C] Avg.
per chest
[D]
Avg. # chests
to search
[E]
Iron Nugget 9–184039846.4%8.1412.2
Flint 1–44039846.4%1.5082.2
Obsidian 1–24039846.4%0.9052.2
Fire Charge 14039846.4%0.6032.2
Flint and Steel 14039846.4%0.6032.2
Gold Nugget 4–241539820.5%3.1664.9
Golden Apple 11539820.5%0.2264.9
Enchanted Golden Axe[F] 11539820.5%0.2264.9
Enchanted Golden Hoe[F] 11539820.5%0.2264.9
Enchanted Golden Pickaxe[F] 11539820.5%0.2264.9
Enchanted Golden Shovel[F] 11539820.5%0.2264.9
Enchanted Golden Sword[F] 11539820.5%0.2264.9
Enchanted Golden Helmet[F] 11539820.5%0.2264.9
Enchanted Golden Chestplate[F] 11539820.5%0.2264.9
Enchanted Golden Leggings[F] 11539820.5%0.2264.9
Enchanted Golden Boots[F] 11539820.5%0.2264.9
Glistering Melon Slice 4–1253987.3%0.60313.7
Golden Carrot 4–1253987.3%0.60313.7
Gold Ingot 2–853987.3%0.37713.7
Clock 153987.3%0.07513.7
Light Weighted Pressure Plate 153987.3%0.07513.7
Golden Horse Armor 153987.3%0.07513.7
Block of Gold 1–213981.5%0.02366.8
Bell 113981.5%0.01566.8
Enchanted Golden Apple 113981.5%0.01566.8

In Bedrock Edition, each ruined portal chest contains 4–8 item stacks, with the following distribution:

Item Stack Size [A] Weight [B] Chance [C] Avg.
per chest
[D]
Avg. # chests
to search
[E]
Iron Nugget 9–184039846.4%8.1412.2
Flint 1–44039846.4%1.5082.2
Obsidian 1–24039846.4%0.9052.2
Fire Charge 14039846.4%0.6032.2
Flint and Steel 14039846.4%0.6032.2
Gold Nugget 4–241539820.5%3.1664.9
Golden Apple 11539820.5%0.2264.9
Enchanted Golden Axe[F] 11539820.5%0.2264.9
Enchanted Golden Hoe[F] 11539820.5%0.2264.9
Enchanted Golden Pickaxe[F] 11539820.5%0.2264.9
Enchanted Golden Shovel[F] 11539820.5%0.2264.9
Enchanted Golden Sword[F] 11539820.5%0.2264.9
Enchanted Golden Helmet[F] 11539820.5%0.2264.9
Enchanted Golden Chestplate[F] 11539820.5%0.2264.9
Enchanted Golden Leggings[F] 11539820.5%0.2264.9
Enchanted Golden Boots[F] 11539820.5%0.2264.9
Glistering Melon Slice 4–1253987.3%0.60313.7
Golden Carrot 4–1253987.3%0.60313.7
Gold Ingot 2–853987.3%0.37713.7
Clock 153987.3%0.07513.7
Light Weighted Pressure Plate 153987.3%0.07513.7
Golden Horse Armor 153987.3%0.07513.7
Block of Gold 1–213981.5%0.02366.8
Bell 113981.5%0.01566.8
Enchanted Golden Apple 113981.5%0.01566.8
  1. a b The size of stacks (or for unstackable items, number) of this item on any given roll.
  2. a b The weight of this item relative to other items in the pool.
  3. a b The odds of finding any of this item in a single chest.
  4. a b The number of items expected per chest, averaged over a large number of chests.
  5. a b The average number of chests the player should expect to search to find any of this item.
  6. a b c d e f g h i j k l m n o p q r All enchantments are equally probable, including treasure enchantments (except Soul Speed, and Swift Sneak), and any level of the enchantment is equally probable.


History

Java Edition
1.1620w16aAdded ruined portals.
20w17aRuined portals now generate less frequently.
Badlands no longer generate ruined portals using the "mountain" type, thus making ruined portals spawn at normal frequency in badlands.
20w18aGolden apples are now less common in ruined portal loot chests, having their weight changed from 40 to 15.
Bedrock Edition
1.16.0beta 1.16.0.57Added ruined portals.
beta 1.16.0.59Changed ruined portals generating in the nether to use blackstone instead of nether bricks.
Ruined portal loot chests now roll 4-8 times instead of 4-6 to match Java.
1.16.100beta 1.16.100.54Ruined Portals now can generate with 4–12 glistering melons instead of only one.

Issues

Issues relating to "Ruined Portal" are maintained on the bug tracker. Report issues there.

Trivia

  • Using the partially buried generation, some ruined portal variants are short enough that they can generate completely on the surface.
  • Ruined portals are the only generated structure that can be found in more than one dimension.
  • All ruined portal structures contain enough obsidian to make a complete portal. However, in basic portals, there is often not enough as each obsidian has a 15% chance to be replaced with crying obsidian.
  • Due to generating with magma blocks, underwater ruined portals create downward bubble columns.

Gallery

References

  1. MC-178805 Resolved as "Works as Intended".
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