Best 1.20 Survival Island Seeds

Spawn on a real island — at least 80% of the surrounding 400 blocks is open ocean on every seed here.

Java Edition 1.20 · 15 verified seeds · updated 2026-07-17

Map of Minecraft seed 647468435707476623 around spawn Explore this seed
#1

647468435707476623

A true survival island — 97% of the surrounding 400 blocks is open ocean, so every resource run starts with a boat.

Spawn
-156, 564 (Beach)
Stronghold
1,984 blocks
  • Ruined Portal278
  • Ocean Monument357

Nearby biomes: Ocean · Deep Ocean

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Map of Minecraft seed 1188653222203147276 around spawn Explore this seed
#2

1188653222203147276

A true survival island — 97% of the surrounding 400 blocks is open ocean, so every resource run starts with a boat.

Spawn
344, -184 (Windswept Savanna)
Stronghold
1,524 blocks
  • Ocean Monument299
  • Ruined Portal340

Nearby biomes: Deep Ocean · Deep Cold Ocean · Ocean

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Map of Minecraft seed 8529009853885482898 around spawn Explore this seed
#3

8529009853885482898

A true survival island — 96% of the surrounding 400 blocks is open ocean, so every resource run starts with a boat.

Spawn
-192, -272 (Birch Forest)
Stronghold
1,522 blocks
  • Ruined Portal195
  • Ocean Monument419

Nearby biomes: Cold Ocean · Deep Ocean · Ocean · Deep Cold Ocean

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Map of Minecraft seed -8255328208231456897 around spawn Explore this seed
#4

-8255328208231456897

A true survival island — 95% of the surrounding 400 blocks is open ocean, so every resource run starts with a boat.

Spawn
0, 448 (Desert)
Stronghold
1,979 blocks
  • Ruined Portal229

Nearby biomes: Warm Ocean · Lukewarm Ocean · Savanna

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Map of Minecraft seed 5314954770218946031 around spawn Explore this seed
#5

5314954770218946031

A true survival island — 95% of the surrounding 400 blocks is open ocean, so every resource run starts with a boat.

Spawn
616, -192 (Beach)
Stronghold
1,992 blocks
  • Ruined Portal358

Nearby biomes: Ocean · Cold Ocean · Deep Cold Ocean · Deep Ocean

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Map of Minecraft seed -8125342981177501739 around spawn Explore this seed
#6

-8125342981177501739

A true survival island — 93% of the surrounding 400 blocks is open ocean, so every resource run starts with a boat.

Spawn
304, -176 (Stony Shore)
Stronghold
1,564 blocks
  • Ocean Monument290
  • Ruined Portal334

Nearby biomes: Deep Cold Ocean · Cold Ocean

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Map of Minecraft seed -4164268232718277120 around spawn Explore this seed
#7

-4164268232718277120

A true survival island — 92% of the surrounding 400 blocks is open ocean, so every resource run starts with a boat.

Spawn
-96, 0 (Forest)
Stronghold
1,489 blocks
  • Ruined Portal322
  • Ocean Monument344

Nearby biomes: Ocean · Deep Ocean · Deep Lukewarm Ocean

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Map of Minecraft seed 7599215174541073819 around spawn Explore this seed
#8

7599215174541073819

A true survival island — 91% of the surrounding 400 blocks is open ocean, so every resource run starts with a boat.

Spawn
816, 352 (Stony Shore)
Stronghold
2,952 blocks
  • Ruined Portal379

Nearby biomes: Warm Ocean · Desert

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Map of Minecraft seed 6847067256082907206 around spawn Explore this seed
#9

6847067256082907206

A true survival island — 90% of the surrounding 400 blocks is open ocean, so every resource run starts with a boat.

Spawn
48, 0 (Taiga)
Stronghold
1,896 blocks
  • Ruined Portal93
  • Ocean Monument304

Nearby biomes: Deep Cold Ocean · Cold Ocean · Deep Ocean · Ocean

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Map of Minecraft seed -8201504769206844827 around spawn Explore this seed
#10

-8201504769206844827

A true survival island — 90% of the surrounding 400 blocks is open ocean, so every resource run starts with a boat.

Spawn
272, 224 (Beach)
Stronghold
1,398 blocks
  • Ruined Portal187
  • Ocean Monument400

Nearby biomes: Deep Ocean · Ocean · Deep Cold Ocean

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Map of Minecraft seed -7376928053725243664 around spawn Explore this seed
#11

-7376928053725243664

A true survival island — 90% of the surrounding 400 blocks is open ocean, so every resource run starts with a boat.

Spawn
-272, 384 (Beach)
Stronghold
2,421 blocks
  • Ruined Portal344
  • Ocean Monument375

Nearby biomes: Deep Ocean · Ocean · Plains

Open in Seed Map →Full seed profile →
Map of Minecraft seed -3816603181736985849 around spawn Explore this seed
#13

-3816603181736985849

A true survival island — 89% of the surrounding 400 blocks is open ocean, so every resource run starts with a boat.

Spawn
-48, 208 (Savanna)
Stronghold
1,750 blocks
  • Ruined Portal244

Nearby biomes: Lukewarm Ocean · Deep Lukewarm Ocean · Warm Ocean · Deep Ocean · Ocean · Stony Shore

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Map of Minecraft seed 4896006738966610875 around spawn Explore this seed
#14

4896006738966610875

A true survival island — 88% of the surrounding 400 blocks is open ocean, so every resource run starts with a boat.

Spawn
240, -144 (Stony Shore)
Stronghold
1,444 blocks
  • Ruined Portal244

Nearby biomes: Cold Ocean · Ocean · Deep Cold Ocean · Deep Ocean · Stony Shore · Plains

Open in Seed Map →Full seed profile →
Map of Minecraft seed -6405405554351899274 around spawn Explore this seed
#15

-6405405554351899274

A true survival island — 88% of the surrounding 400 blocks is open ocean, so every resource run starts with a boat.

Spawn
208, 288 (Snowy Plains)
Stronghold
1,960 blocks
  • Ruined Portal318

Nearby biomes: Deep Cold Ocean · Frozen Ocean · Deep Frozen Ocean · Cold Ocean · Snowy Plains

Open in Seed Map →Full seed profile →

About these 1.20 seeds

These aren't "island-ish" seeds: for each one, the spawn point sits on land with ocean covering at least 80% of everything within 400 blocks. The percentage on each card is measured, so you know exactly how isolated the start is.

1.20 (Trails & Tales) added cherry groves and buried trail ruins to world generation, and 1.20.1 is one of the most-pinned modpack versions — plenty of worlds are still being started on it. Every seed below was verified on 1.20's own generation, not back-ported from a newer list: 1.21 changed worldgen (trial chambers, then the pale garden), so a list verified there can't honestly claim these coordinates.

Verified for Java Edition 1.20 (Trails & Tales). Biomes, terrain and structures are identical across 1.20 – 1.20.6, so any 1.20.x world matches these maps — the only generation change in the patches (1.20.2 made diamond ore more common in the deepslate layers) doesn't affect anything these cards measure.

Playing the current version instead? See the latest island seeds — or the same list for 1.19 · 1.18 · 1.16. All 1.20 lists live under best 1.20 seeds.

Frequently asked questions

How is this different from the main island seeds page?
Same criteria, different worldgen: these are separate seeds found and verified on 1.20's generation. Our main island seeds list is verified on the current version, and seeds don't transfer exactly between the two.
Which releases do these seeds work on?
The whole 1.20 line — 1.20 through 1.20.6, including 1.20.1 modpacks: biomes, terrain and structure positions are identical across the patches. (The one generation change, 1.20.2 making diamond ore more common in the deepslate layers, doesn't move anything on these cards.) On 1.21+ the same seed generates almost the same world, but trial chambers (1.21) and pale gardens (1.21.4) appear and a few placements shift, so use our main lists for current versions.
Do these seeds work on Bedrock Edition?
No — Java and Bedrock generate different worlds from the same seed. These lists are Java Edition only.