Ruined Portal

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Ruined Portal
Overworld Ruined Portal 1.pngNether Ruined Portal 1.png
Overworld Giant Ruined Portal 1.png
Biomes

All Overworld biomes
All Nether biomes

Consists of

See § Structure

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The specific instructions are: Renders for the basic structures for the structure list. For the infobox, a Nether giant portal
A standard nether portal requires 10-14 obsidian to create.

A ruined portal is a naturally generated damaged nether portal, which spawns in both the Nether and the Overworld.

Generation[edit]

Underside of the ruined portals

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. 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. This gives normal ruined portals a 95% chance, for a 9.5% chance per normal ruined portal.[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 "cold" 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[edit]

Ruined portals generate incomplete portal frames composed of both obsidian and crying obsidian, despite crying obsidian not being a valid portal material[1] (likely to give the portals an "aged" appearance). Some frames generate flat on the ground, as if they toppled over.

Ruined portals generate with a chest[2], which contain various golden items and items used to build portals such as obsidian and flint and steel.

A 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 stored, meaning they are not modified as detailed in the Generation section above.

Portals[edit]

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 Netherrack
63 Stone Bricks
38 Stone Brick Slab
31 Obsidian
20 Stone Brick Stairs
18 Iron Bars
11 Lava
4 Chiseled Stone Bricks
2 Block of Gold
1 Chest

ruined_portal/giant_portal_2 A large incomplete portal.

237 Netherrack
55 Stone Bricks
30 Stone Brick Slab
29 Obsidian
22 Iron Bars
19 Lava
18 Stone Brick Stairs
6 Chiseled Stone Bricks
2 Block of Gold
1 Chest

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

324 Netherrack
51 Stone Bricks
40 Stone Brick Slab
33 Lava
25 Obsidian
22 Iron Bars
6 Block of Gold
6 Chiseled Stone Bricks
6 Stone Brick Stairs
1 Chest

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

55 Netherrack
11 Obsidian
10 Stone Slab
9 Stone Bricks
7 Stone
6 Stone Brick Stairs
3 Chiseled Stone Bricks
2 Block of Gold
1 Chest
1 Cracked Stone Bricks
1 Stone Brick Slab

ruined_portal/portal_2 A hanging incomplete portal.

115 Netherrack
26 Lava
19 Stone Bricks
14 Stone Brick Slab
11 Obsidian
10 Smooth Stone Slab
4 Stone Brick Stairs
2 Block of Gold
2 Iron Bars
1 Chest
1 Chiseled Stone Bricks
1 Mossy Stone Bricks

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

132 Netherrack
36 Stone Bricks
16 Stone Brick Slab
11 Obsidian
2 Lava
1 Chest

ruined_portal/portal_4 A small incomplete portal.

130 Netherrack
36 Stone Bricks
16 Stone Brick Slab
11 Obsidian
3 Lava
1 Block of Gold
1 Chest

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

145 Netherrack
22 Stone Bricks
15 Obsidian
12 Stone Brick Slab
6 Stone
5 Stone Slab
3 Block of Gold
2 Mossy Stone Bricks
1 Chest
1 Cracked Stone Bricks
1 Lava
1 Stone Brick Stairs

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

41 Netherrack
16 Obsidian
4 Stone Brick Slab
2 Stone Brick Stairs
1 Block of Gold
1 Chest

ruined_portal/portal_7 An incomplete portal submerged in lava.

92 Netherrack
21 Lava
12 Obsidian
3 Stone Brick Slab
2 Block of Gold
1 Chest
1 Stone Bricks
1 Stone Brick Stairs

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

144 Netherrack
26 Lava
17 Obsidian
14 Stone Bricks
6 Stone Brick Stairs
4 Stone Brick Wall
3 Block of Gold
2 Chiseled Stone Bricks
1 Chest
1 Stone Brick Slab

ruined_portal/portal_9 A small incomplete portal.

63 Netherrack
12 Obsidian
11 Stone Brick Stairs
2 Block of Gold
1 Chest
1 Magma Block
1 Stone Brick Slab

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

123 Netherrack
19 Lava
13 Obsidian
13 Stone Bricks
3 Chiseled Stone Bricks
3 Iron Bars
3 Stone Brick Stairs
2 Block of Gold
1 Chest

Blocks[edit]

All ruined portals
Chest
Block of Gold
Obsidian
Crying Obsidian
Netherrack
Magma Block
Lava
Overworld
Iron Bars
Stone
Stone Bricks
Mossy Stone Bricks
Cracked Stone Bricks
Chiseled Stone Bricks
Stone Slab
Smooth Stone Slab
Stone Brick Slab
Mossy Stone Brick Slab
Stone Brick Stairs
Mossy Stone Brick Stairs
Stone Brick Wall
Mossy Stone Brick Wall
Nether
Chain
Polished Blackstone
Polished Blackstone Bricks
Cracked Polished Blackstone Bricks
Chiseled Polished Blackstone
Polished Blackstone Slab
Polished Blackstone Brick Slab
Polished Blackstone Brick Stairs
Polished Blackstone Brick Wall

Loot[edit]

In Java Edition 1.16[upcoming] 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[note 1] 11539820.5%0.2264.9
Enchanted Golden Hoe[note 1] 11539820.5%0.2264.9
Enchanted Golden Pickaxe[note 1] 11539820.5%0.2264.9
Enchanted Golden Shovel[note 1] 11539820.5%0.2264.9
Enchanted Golden Sword[note 1] 11539820.5%0.2264.9
Enchanted Golden Helmet[note 1] 11539820.5%0.2264.9
Enchanted Golden Chestplate[note 1] 11539820.5%0.2264.9
Enchanted Golden Leggings[note 1] 11539820.5%0.2264.9
Enchanted Golden Boots[note 1] 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 1.16.0[upcoming] 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[note 1] 11539820.5%0.2264.9
Enchanted Golden Hoe[note 1] 11539820.5%0.2264.9
Enchanted Golden Pickaxe[note 1] 11539820.5%0.2264.9
Enchanted Golden Shovel[note 1] 11539820.5%0.2264.9
Enchanted Golden Sword[note 1] 11539820.5%0.2264.9
Enchanted Golden Helmet[note 1] 11539820.5%0.2264.9
Enchanted Golden Chestplate[note 1] 11539820.5%0.2264.9
Enchanted Golden Leggings[note 1] 11539820.5%0.2264.9
Enchanted Golden Boots[note 1] 11539820.5%0.2264.9
Golden Carrot 4–1253987.3%0.60313.7
Gold Ingot 2–853987.3%0.37713.7
Clock 153987.3%0.07513.7
Glistering Melon Slice 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.
  1. 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 any level of the enchantment is equally probable.

History[edit]

Upcoming 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.
Upcoming 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.

Issues[edit]

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

Trivia[edit]

  • 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 basic ruined portal structures contain enough obsidian to make a complete portal. However, there is often not enough in natural ruined portals as some obsidian is replaced with crying obsidian.
  • Due to generating with magma blocks, underwater ruined portals create downward bubble columns.

Gallery[edit]

References[edit]

  1. MC-178805 Resolved as "Works as Intended".
  2. Some chests may be intentionally missing: MC-182652 resolved as "Works as Intended".