Best 1.20 River Seeds

Start next to a river. Each seed includes coordinates and a map.

Java Edition 1.20 · 50 seeds checked against category criteria

These seeds use Java 1.20 (Trails & Tales) generation. Browse all 1.20 categories →

All 50 seeds for Java 1.20

Also has nearby
Predicted biome map of Java 1.20 seed 3682804735658350372 around estimated spawn Explore this seed
#1

3682804735658350372

River is 32 blocks from estimated spawn. Open the map to see the terrain around it.

Estimated spawn
0, 0 (Savanna)
Stronghold
1,506 blocks
  • Ruined Portal16
  • River32
  • Village236
  • Ancient City311
  • Pillager Outpost368

Nearby biomes: Savanna · Dripstone Caves · Plains · Sparse Jungle · Forest · River

Open in Seed Map →
Predicted biome map of Java 1.20 seed 5890856958911755187 around estimated spawn Explore this seed
#2

5890856958911755187

River is 32 blocks from estimated spawn. Open the map to see the terrain around it.

Estimated spawn
-16, 16 (Plains)
Stronghold
1,555 blocks
  • River32
  • Pillager Outpost132
  • Ocean Monument301
  • Ruined Portal355
  • Village365

Nearby biomes: Plains · Forest · Ocean · Flower Forest · River · Deep Ocean

Open in Seed Map →
Predicted biome map of Java 1.20 seed -4287762763279268501 around estimated spawn Explore this seed
#3

-4287762763279268501

River is 32 blocks from estimated spawn. Open the map to see the terrain around it.

Estimated spawn
16, 0 (Forest)
Stronghold
2,449 blocks
  • River32
  • Ruined Portal160
  • Ocean Monument373
  • Ancient City497

Nearby biomes: Forest · Ocean · Plains · Savanna · Stony Shore · Dripstone Caves

Open in Seed Map →
Predicted biome map of Java 1.20 seed -1512085529409497593 around estimated spawn Explore this seed
#4

-1512085529409497593

River is 32 blocks from estimated spawn. Open the map to see the terrain around it.

Estimated spawn
-64, 128 (Desert)
Stronghold
2,355 blocks
  • River32
  • Ruined Portal213
  • Village374
  • Desert Temple446

Nearby biomes: Desert · Warm Ocean · River · Eroded Badlands

Open in Seed Map →
Predicted biome map of Java 1.20 seed 1510612261525215066 around estimated spawn Explore this seed
#5

1510612261525215066

River is 32 blocks from estimated spawn. Open the map to see the terrain around it.

Estimated spawn
16, 48 (Beach)
Stronghold
1,628 blocks
  • River32
  • Village187
  • Ocean Monument304
  • Ruined Portal311

Nearby biomes: Deep Lukewarm Ocean · Lukewarm Ocean · Warm Ocean · Sparse Jungle · Desert · Forest

Open in Seed Map →
Predicted biome map of Java 1.20 seed -3759001329525365409 around estimated spawn Explore this seed
#6

-3759001329525365409

River is 32 blocks from estimated spawn. Open the map to see the terrain around it.

Estimated spawn
0, 0 (Forest)
Stronghold
1,610 blocks
  • River32
  • Village253
  • Pillager Outpost368
  • Ruined Portal476

Nearby biomes: Plains · Taiga · Forest · Snowy Taiga · River · Windswept Hills

Open in Seed Map →
Predicted biome map of Java 1.20 seed 4075906096592434197 around estimated spawn Explore this seed
#7

4075906096592434197

River is 32 blocks from estimated spawn. Open the map to see the terrain around it.

Estimated spawn
0, 0 (Desert)
Stronghold
2,477 blocks
  • River32
  • Ruined Portal148
  • Village334
  • Desert Temple415

Nearby biomes: Desert · Warm Ocean · River · Plains

Open in Seed Map →
Predicted biome map of Java 1.20 seed -436166501005465343 around estimated spawn Explore this seed
#8

-436166501005465343

River is 32 blocks from estimated spawn. Open the map to see the terrain around it.

Estimated spawn
16, 112 (Plains)
Stronghold
2,110 blocks
  • River32
  • Ruined Portal266
  • Village304
  • Ocean Monument377

Nearby biomes: Plains · Cold Ocean · Beach · Sunflower Plains · Ocean · Forest

Open in Seed Map →
Predicted biome map of Java 1.20 seed -729836500633145315 around estimated spawn Explore this seed
#9

-729836500633145315

River is 32 blocks from estimated spawn. Open the map to see the terrain around it.

Estimated spawn
16, 16 (Forest)
Stronghold
2,116 blocks
  • River32
  • Ruined Portal295
  • Ocean Monument329
  • Pillager Outpost362

Nearby biomes: Ocean · Deep Ocean · Plains · Old Growth Birch Forest · Sunflower Plains · Forest

Open in Seed Map →
Predicted biome map of Java 1.20 seed 5093575168471309324 around estimated spawn Explore this seed
#10

5093575168471309324

River is 32 blocks from estimated spawn. Open the map to see the terrain around it.

Estimated spawn
0, 48 (Forest)
Stronghold
1,851 blocks
  • River32
  • Village369
  • Ruined Portal389

Nearby biomes: Plains · Forest · River · Taiga · Dripstone Caves

Open in Seed Map →
Predicted biome map of Java 1.20 seed -3884841337991655276 around estimated spawn Explore this seed
#11

-3884841337991655276

River is 32 blocks from estimated spawn. Open the map to see the terrain around it.

Estimated spawn
0, 0 (Forest)
Stronghold
1,760 blocks
  • River32
  • Ruined Portal193
  • Village382

Nearby biomes: Forest · Plains · Ocean · Cold Ocean · River · Birch Forest

Open in Seed Map →
Predicted biome map of Java 1.20 seed -7144167078613256657 around estimated spawn Explore this seed
#12

-7144167078613256657

River is 32 blocks from estimated spawn. Open the map to see the terrain around it.

Estimated spawn
0, 0 (Bamboo Jungle)
Stronghold
2,051 blocks
  • River32
  • Ruined Portal314
  • Ancient City333

Nearby biomes: Lush Caves · Forest · Bamboo Jungle · Lukewarm Ocean · Dark Forest · Sparse Jungle

Open in Seed Map →
Predicted biome map of Java 1.20 seed -3742008505534590669 around estimated spawn Explore this seed
#13

-3742008505534590669

River is 32 blocks from estimated spawn. Open the map to see the terrain around it.

Estimated spawn
-48, -16 (Forest)
Stronghold
1,696 blocks
  • River32
  • Ruined Portal129
  • Woodland Mansion1,056

Nearby biomes: Forest · Taiga · Old Growth Pine Taiga · River · Plains · Windswept Forest

Open in Seed Map →
Predicted biome map of Java 1.20 seed 2134090024369415602 around estimated spawn Explore this seed
#14

2134090024369415602

River is 32 blocks from estimated spawn. Open the map to see the terrain around it.

Estimated spawn
-304, 160 (Beach)
Stronghold
1,366 blocks
  • River32
  • Ruined Portal115
  • Village497

Nearby biomes: Cold Ocean · Forest · Plains · Deep Frozen Ocean · Beach · Frozen Ocean

Open in Seed Map →
Predicted biome map of Java 1.20 seed 8723774217949895155 around estimated spawn Explore this seed
#15

8723774217949895155

River is 32 blocks from estimated spawn. Open the map to see the terrain around it.

Estimated spawn
192, -48 (Taiga)
Stronghold
1,598 blocks
  • River32
  • Ruined Portal148

Nearby biomes: Cold Ocean · Taiga · Old Growth Pine Taiga · Deep Cold Ocean · Forest · Frozen Ocean

Open in Seed Map →
Predicted biome map of Java 1.20 seed -3867092216133438705 around estimated spawn Explore this seed
#16

-3867092216133438705

River is 32 blocks from estimated spawn. Open the map to see the terrain around it.

Estimated spawn
0, 0 (Birch Forest)
Stronghold
1,428 blocks
  • River32
  • Ruined Portal279

Nearby biomes: Forest · Birch Forest · Dripstone Caves · Meadow · River · Plains

Open in Seed Map →
Predicted biome map of Java 1.20 seed -790537593125343253 around estimated spawn Explore this seed
#17

-790537593125343253

River is 32 blocks from estimated spawn. Open the map to see the terrain around it.

Estimated spawn
28, -64 (Birch Forest)
Stronghold
1,697 blocks
  • River32
  • Ruined Portal218

Nearby biomes: Ocean · Swamp · Dark Forest · Beach · Plains · Deep Ocean

Open in Seed Map →
Predicted biome map of Java 1.20 seed 7487684871225855984 around estimated spawn Explore this seed
#18

7487684871225855984

River is 32 blocks from estimated spawn. Open the map to see the terrain around it.

Estimated spawn
0, 0 (Birch Forest)
Stronghold
2,317 blocks
  • River32
  • Ruined Portal193

Nearby biomes: Forest · Ocean · Cold Ocean · Deep Ocean · Deep Cold Ocean · Birch Forest

Open in Seed Map →
Predicted biome map of Java 1.20 seed 6217631505723021300 around estimated spawn Explore this seed
#19

6217631505723021300

River is 32 blocks from estimated spawn. Open the map to see the terrain around it.

Estimated spawn
128, -32 (Forest)
Stronghold
2,400 blocks
  • River32
  • Ruined Portal420

Nearby biomes: Taiga · Plains · Frozen Ocean · Forest · River · Snowy Taiga

Open in Seed Map →
Predicted biome map of Java 1.20 seed 3621269545239414741 around estimated spawn Explore this seed
#20

3621269545239414741

River is 32 blocks from estimated spawn. Open the map to see the terrain around it.

Estimated spawn
-32, 0 (Sparse Jungle)
Stronghold
1,980 blocks
  • River32
  • Ruined Portal224

Nearby biomes: River · Forest · Jungle · Desert · Dripstone Caves · Sparse Jungle

Open in Seed Map →
Predicted biome map of Java 1.20 seed -1641318964521171424 around estimated spawn Explore this seed
#21

-1641318964521171424

River is 45 blocks from estimated spawn. Open the map to see the terrain around it.

Estimated spawn
0, 0 (Forest)
Stronghold
1,367 blocks
  • Ruined Portal36
  • River45
  • Jungle Temple400
  • Village466

Nearby biomes: Forest · Savanna · Plains · Jungle · River · Dripstone Caves

Open in Seed Map →
Predicted biome map of Java 1.20 seed 8110621733865685026 around estimated spawn Explore this seed
#22

8110621733865685026

River is 45 blocks from estimated spawn. Open the map to see the terrain around it.

Estimated spawn
0, 0 (Badlands)
Stronghold
2,404 blocks
  • River45
  • Desert Temple198
  • Ruined Portal339
  • Village425

Nearby biomes: Desert · Warm Ocean · River · Lukewarm Ocean · Badlands · Eroded Badlands

Open in Seed Map →
Predicted biome map of Java 1.20 seed 907315404562015771 around estimated spawn Explore this seed
#23

907315404562015771

River is 45 blocks from estimated spawn. Open the map to see the terrain around it.

Estimated spawn
-32, 0 (Savanna)
Stronghold
1,911 blocks
  • River45
  • Pillager Outpost210
  • Ruined Portal253
  • Village330

Nearby biomes: Savanna · Plains · Sparse Jungle · River · Forest

Open in Seed Map →
Predicted biome map of Java 1.20 seed -3998699387016058871 around estimated spawn Explore this seed
#24

-3998699387016058871

River is 45 blocks from estimated spawn. Open the map to see the terrain around it.

Estimated spawn
-160, -64 (Sunflower Plains)
Stronghold
1,922 blocks
  • River45
  • Ruined Portal316
  • Ocean Monument378

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

Open in Seed Map →
Predicted biome map of Java 1.20 seed 4712508781325958219 around estimated spawn Explore this seed
#25

4712508781325958219

River is 45 blocks from estimated spawn. Open the map to see the terrain around it.

Estimated spawn
16, -16 (Savanna)
Stronghold
2,531 blocks
  • River45
  • Village387
  • Ruined Portal413

Nearby biomes: Savanna · Plains · Forest · River · Sunflower Plains · Jungle

Open in Seed Map →
Predicted biome map of Java 1.20 seed 443371017288653908 around estimated spawn Explore this seed
#26

443371017288653908

River is 45 blocks from estimated spawn. Open the map to see the terrain around it.

Estimated spawn
0, 32 (Savanna)
Stronghold
2,459 blocks
  • River45
  • Village148
  • Ruined Portal445

Nearby biomes: Savanna · Badlands · Lukewarm Ocean · River · Dripstone Caves

Open in Seed Map →
Predicted biome map of Java 1.20 seed -3720779069464518742 around estimated spawn Explore this seed
#27

-3720779069464518742

River is 45 blocks from estimated spawn. Open the map to see the terrain around it.

Estimated spawn
-64, 16 (Wooded Badlands)
Stronghold
1,557 blocks
  • River45
  • Ancient City288
  • Ruined Portal295

Nearby biomes: Wooded Badlands · Dripstone Caves · Badlands · River · Lush Caves

Open in Seed Map →
Predicted biome map of Java 1.20 seed -8922556535964140221 around estimated spawn Explore this seed
#28

-8922556535964140221

River is 45 blocks from estimated spawn. Open the map to see the terrain around it.

Estimated spawn
16, -16 (Forest)
Stronghold
2,350 blocks
  • River45
  • Village262
  • Ruined Portal308

Nearby biomes: Plains · Forest · Dark Forest · River · Sunflower Plains · Birch Forest

Open in Seed Map →
Predicted biome map of Java 1.20 seed 4135941389161469231 around estimated spawn Explore this seed
#29

4135941389161469231

River is 45 blocks from estimated spawn. Open the map to see the terrain around it.

Estimated spawn
0, 0 (Forest)
Stronghold
1,819 blocks
  • River45
  • Village238
  • Ruined Portal453

Nearby biomes: Forest · Plains · Savanna · River

Open in Seed Map →
Predicted biome map of Java 1.20 seed -8438249518198701127 around estimated spawn Explore this seed
#30

-8438249518198701127

River is 45 blocks from estimated spawn. Open the map to see the terrain around it.

Estimated spawn
-16, -48 (Windswept Savanna)
Stronghold
1,540 blocks
  • River45
  • Ruined Portal353
  • Village354

Nearby biomes: Savanna · Lukewarm Ocean · Plains · Deep Lukewarm Ocean · Forest · River

Open in Seed Map →
Predicted biome map of Java 1.20 seed 1669703016873350077 around estimated spawn Explore this seed
#31

1669703016873350077

River is 45 blocks from estimated spawn. Open the map to see the terrain around it.

Estimated spawn
0, 0 (Taiga)
Stronghold
1,766 blocks
  • River45
  • Ruined Portal330
  • Village471

Nearby biomes: Forest · Plains · Birch Forest · River · Taiga · Dark Forest

Open in Seed Map →
Predicted biome map of Java 1.20 seed 6672082573162801358 around estimated spawn Explore this seed
#32

6672082573162801358

River is 45 blocks from estimated spawn. Open the map to see the terrain around it.

Estimated spawn
0, 0 (Savanna)
Stronghold
2,658 blocks
  • River45
  • Ruined Portal240
  • Village294

Nearby biomes: Savanna · Plains · Dripstone Caves · River · Sparse Jungle · Jungle

Open in Seed Map →
Predicted biome map of Java 1.20 seed -5764543194051170752 around estimated spawn Explore this seed
#33

-5764543194051170752

River is 45 blocks from estimated spawn. Open the map to see the terrain around it.

Estimated spawn
0, 0 (Old Growth Pine Taiga)
Stronghold
1,932 blocks
  • River45
  • Ruined Portal355

Nearby biomes: Forest · Taiga · Old Growth Pine Taiga · Old Growth Spruce Taiga · Cold Ocean · River

Open in Seed Map →
Predicted biome map of Java 1.20 seed 5676715897940377209 around estimated spawn Explore this seed
#34

5676715897940377209

River is 45 blocks from estimated spawn. Open the map to see the terrain around it.

Estimated spawn
0, 32 (Wooded Badlands)
Stronghold
2,421 blocks
  • River45
  • Ruined Portal311

Nearby biomes: Wooded Badlands · Badlands · Dripstone Caves · River · Forest · Sparse Jungle

Open in Seed Map →
Predicted biome map of Java 1.20 seed -8102943961145966638 around estimated spawn Explore this seed
#35

-8102943961145966638

River is 45 blocks from estimated spawn. Open the map to see the terrain around it.

Estimated spawn
0, 32 (Taiga)
Stronghold
1,503 blocks
  • River45
  • Ruined Portal250

Nearby biomes: Snowy Plains · Old Growth Pine Taiga · Taiga · Forest · Plains · Old Growth Spruce Taiga

Open in Seed Map →
Predicted biome map of Java 1.20 seed -1024178524888312300 around estimated spawn Explore this seed
#36

-1024178524888312300

River is 45 blocks from estimated spawn. Open the map to see the terrain around it.

Estimated spawn
0, 0 (Forest)
Stronghold
2,366 blocks
  • River45
  • Ruined Portal215

Nearby biomes: Forest · Plains · River · Beach · Sparse Jungle

Open in Seed Map →
Predicted biome map of Java 1.20 seed 7912927940928776252 around estimated spawn Explore this seed
#37

7912927940928776252

River is 64 blocks from estimated spawn. Open the map to see the terrain around it.

Estimated spawn
0, 0 (Desert)
Stronghold
2,234 blocks
  • River64
  • Ruined Portal272
  • Pillager Outpost379
  • Desert Temple461

Nearby biomes: Desert · Wooded Badlands · Dripstone Caves · Badlands · River

Open in Seed Map →
Predicted biome map of Java 1.20 seed -8953719948058354646 around estimated spawn Explore this seed
#38

-8953719948058354646

River is 64 blocks from estimated spawn. Open the map to see the terrain around it.

Estimated spawn
-160, -160 (Savanna)
Stronghold
1,654 blocks
  • River64
  • Ruined Portal387
  • Village431
  • Woodland Mansion817

Nearby biomes: Savanna · Deep Lukewarm Ocean · Lukewarm Ocean · Forest · River · Plains

Open in Seed Map →
Predicted biome map of Java 1.20 seed 8356358118642376392 around estimated spawn Explore this seed
#39

8356358118642376392

River is 64 blocks from estimated spawn. Open the map to see the terrain around it.

Estimated spawn
0, 0 (Forest)
Stronghold
2,324 blocks
  • River64
  • Ruined Portal192
  • Village360
  • Pillager Outpost481

Nearby biomes: Forest · Taiga · River

Open in Seed Map →
Predicted biome map of Java 1.20 seed 6299219092446076501 around estimated spawn Explore this seed
#40

6299219092446076501

River is 64 blocks from estimated spawn. Open the map to see the terrain around it.

Estimated spawn
0, 0 (Sparse Jungle)
Stronghold
1,728 blocks
  • River64
  • Ruined Portal284
  • Village430
  • Ocean Monument431

Nearby biomes: Jungle · Lukewarm Ocean · Plains · Sparse Jungle · Deep Lukewarm Ocean · River

Open in Seed Map →
Predicted biome map of Java 1.20 seed 2497890817484361280 around estimated spawn Explore this seed
#41

2497890817484361280

River is 64 blocks from estimated spawn. Open the map to see the terrain around it.

Estimated spawn
-32, 32 (Old Growth Pine Taiga)
Stronghold
1,397 blocks
  • River64
  • Village250
  • Ocean Monument286
  • Ruined Portal455

Nearby biomes: Taiga · Cold Ocean · Deep Cold Ocean · Old Growth Pine Taiga · Frozen Ocean · River

Open in Seed Map →
Predicted biome map of Java 1.20 seed -7810910136203368765 around estimated spawn Explore this seed
#42

-7810910136203368765

River is 64 blocks from estimated spawn. Open the map to see the terrain around it.

Estimated spawn
0, 0 (Savanna)
Stronghold
1,868 blocks
  • River64
  • Village167
  • Ruined Portal213
  • Ocean Monument441

Nearby biomes: Lukewarm Ocean · Plains · Savanna · Deep Ocean · Jungle · Forest

Open in Seed Map →
Predicted biome map of Java 1.20 seed -7420310691428759270 around estimated spawn Explore this seed
#43

-7420310691428759270

River is 64 blocks from estimated spawn. Open the map to see the terrain around it.

Estimated spawn
-16, -64 (Forest)
Stronghold
1,333 blocks
  • River64
  • Ruined Portal294
  • Village435

Nearby biomes: Forest · Taiga · Cold Ocean · River · Plains · Beach

Open in Seed Map →
Predicted biome map of Java 1.20 seed 9040273576038333141 around estimated spawn Explore this seed
#44

9040273576038333141

River is 64 blocks from estimated spawn. Open the map to see the terrain around it.

Estimated spawn
0, 32 (Plains)
Stronghold
1,349 blocks
  • River64
  • Ruined Portal163
  • Village238

Nearby biomes: Forest · River · Plains · Birch Forest · Taiga · Cold Ocean

Open in Seed Map →
Predicted biome map of Java 1.20 seed 8403790072469200755 around estimated spawn Explore this seed
#45

8403790072469200755

River is 64 blocks from estimated spawn. Open the map to see the terrain around it.

Estimated spawn
-64, 128 (Forest)
Stronghold
1,530 blocks
  • River64
  • Ruined Portal320
  • Woodland Mansion618

Nearby biomes: Forest · Cold Ocean · Taiga · Stony Shore · Grove · Plains

Open in Seed Map →
Predicted biome map of Java 1.20 seed -3012106407872548720 around estimated spawn Explore this seed
#46

-3012106407872548720

River is 64 blocks from estimated spawn. Open the map to see the terrain around it.

Estimated spawn
-16, -112 (Plains)
Stronghold
2,283 blocks
  • River64
  • Ruined Portal351
  • Village379

Nearby biomes: Plains · Cold Ocean · River · Forest · Taiga

Open in Seed Map →
Predicted biome map of Java 1.20 seed 6901411440233520465 around estimated spawn Explore this seed
#47

6901411440233520465

River is 64 blocks from estimated spawn. Open the map to see the terrain around it.

Estimated spawn
0, 0 (Plains)
Stronghold
1,799 blocks
  • River64
  • Ruined Portal351
  • Village387

Nearby biomes: Plains · Sunflower Plains · Flower Forest · River · Forest · Dripstone Caves

Open in Seed Map →
Predicted biome map of Java 1.20 seed -6791136963203433504 around estimated spawn Explore this seed
#48

-6791136963203433504

River is 64 blocks from estimated spawn. Open the map to see the terrain around it.

Estimated spawn
-16, 64 (Taiga)
Stronghold
2,190 blocks
  • River64
  • Ruined Portal298
  • Village471

Nearby biomes: Forest · Dripstone Caves · Taiga · Plains · Dark Forest · River

Open in Seed Map →
Predicted biome map of Java 1.20 seed 4054303248537342506 around estimated spawn Explore this seed
#49

4054303248537342506

River is 64 blocks from estimated spawn. Open the map to see the terrain around it.

Estimated spawn
0, 0 (Plains)
Stronghold
1,991 blocks
  • River64
  • Ruined Portal144
  • Village375

Nearby biomes: Plains · Ocean · Forest · River · Beach

Open in Seed Map →
Predicted biome map of Java 1.20 seed -7472967362031532051 around estimated spawn Explore this seed
#50

-7472967362031532051

River is 64 blocks from estimated spawn. Open the map to see the terrain around it.

Estimated spawn
-96, 48 (Plains)
Stronghold
1,800 blocks
  • River64
  • Pillager Outpost173
  • Ruined Portal400

Nearby biomes: Ocean · Plains · Deep Ocean · River · Beach · Birch Forest

Open in Seed Map →

About these 1.20 seeds

A river biome sample within 128 blocks of estimated spawn is required for every seed in this category. Lists are computed separately for the version printed on each card.

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.

For the current Java 26.3 release, see the main river seeds — or the same list for 26.3 · 1.21.4 · 1.19 · 1.18. All 1.20 lists live under best 1.20 seeds.

Frequently asked questions

How is this different from the main river seeds page?
These seeds are computed for Java 1.20. The main river seeds list targets Java 26.3. Match the version on the card; older versions can generate different biomes and structure positions.
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.