Best 1.18 Scary Seeds

Start near a dark forest, pale garden, or the deep dark. Each seed includes coordinates and a map.

Java Edition 1.18 · 50 seeds checked against category criteria

These seeds use Java 1.18 (Caves & Cliffs Part II) generation. Browse all 1.18 categories →

All 50 seeds for Java 1.18

Also has nearby
Predicted biome map of Java 1.18 seed -5703025393434928806 around estimated spawn Explore this seed
#1

-5703025393434928806

Dark Forest is 23 blocks from estimated spawn.

Estimated spawn
-48, 16 (Old Growth Birch Forest)
Stronghold
2,142 blocks
  • Dark Forest23
  • Ruined Portal279
  • Woodland Mansion506

Nearby biomes: Ocean · Forest · Dark Forest · Lukewarm Ocean · Stony Shore · Birch Forest

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Predicted biome map of Java 1.18 seed 5004098694209287661 around estimated spawn Explore this seed
#2

5004098694209287661

Dark Forest is 23 blocks from estimated spawn.

Estimated spawn
112, 0 (Dark Forest)
Stronghold
2,516 blocks
  • Dark Forest23
  • Ruined Portal410
  • Woodland Mansion552

Nearby biomes: Dark Forest · Ocean · Deep Ocean · Lush Caves

Open in Seed Map →
Predicted biome map of Java 1.18 seed 4239451321417483817 around estimated spawn Explore this seed
#3

4239451321417483817

Dark Forest is 23 blocks from estimated spawn.

Estimated spawn
-64, 16 (Dark Forest)
Stronghold
2,017 blocks
  • Dark Forest23
  • Ruined Portal125
  • Woodland Mansion977

Nearby biomes: Dark Forest · Old Growth Birch Forest · Birch Forest · Forest · Lush Caves · Ocean

Open in Seed Map →
Predicted biome map of Java 1.18 seed 7651812966758506999 around estimated spawn Explore this seed
#4

7651812966758506999

Dark Forest is 23 blocks from estimated spawn.

Estimated spawn
0, 0 (Dark Forest)
Stronghold
2,390 blocks
  • Dark Forest23
  • Ruined Portal339
  • Woodland Mansion1,008

Nearby biomes: Old Growth Birch Forest · Forest · Dark Forest · Birch Forest · River · Ocean

Open in Seed Map →
Predicted biome map of Java 1.18 seed -5000360971284994798 around estimated spawn Explore this seed
#5

-5000360971284994798

Dark Forest is 23 blocks from estimated spawn.

Estimated spawn
0, 0 (Dark Forest)
Stronghold
2,599 blocks
  • Dark Forest23
  • Ruined Portal286
  • Woodland Mansion600

Nearby biomes: Dark Forest · Forest · River · Plains · Old Growth Birch Forest · Birch Forest

Open in Seed Map →
Predicted biome map of Java 1.18 seed 6734119111596211347 around estimated spawn Explore this seed
#6

6734119111596211347

Dark Forest is 23 blocks from estimated spawn.

Estimated spawn
-112, -80 (Dark Forest)
Stronghold
1,626 blocks
  • Dark Forest23
  • Ruined Portal258
  • Village408

Nearby biomes: Ocean · Forest · Old Growth Birch Forest · Dark Forest · Beach · Plains

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Predicted biome map of Java 1.18 seed -9194317753746847520 around estimated spawn Explore this seed
#7

-9194317753746847520

Dark Forest is 23 blocks from estimated spawn.

Estimated spawn
-64, 16 (Stony Shore)
Stronghold
2,300 blocks
  • Dark Forest23
  • Ruined Portal371
  • Village462

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

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Predicted biome map of Java 1.18 seed -8098631962848085968 around estimated spawn Explore this seed
#8

-8098631962848085968

Dark Forest is 23 blocks from estimated spawn.

Estimated spawn
0, 0 (Dark Forest)
Stronghold
1,887 blocks
  • Dark Forest23
  • Ruined Portal336
  • Village448

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

Open in Seed Map →
Predicted biome map of Java 1.18 seed 8278993828453863392 around estimated spawn Explore this seed
#9

8278993828453863392

Dark Forest is 23 blocks from estimated spawn.

Estimated spawn
0, 0 (Dark Forest)
Stronghold
1,662 blocks
  • Dark Forest23
  • Ruined Portal253
  • Village384

Nearby biomes: Dark Forest · Dripstone Caves · Lush Caves · River · Forest · Birch Forest

Open in Seed Map →
Predicted biome map of Java 1.18 seed -5198779072641012931 around estimated spawn Explore this seed
#10

-5198779072641012931

Dark Forest is 23 blocks from estimated spawn.

Estimated spawn
48, 0 (Dark Forest)
Stronghold
2,110 blocks
  • Dark Forest23
  • Ruined Portal177
  • Woodland Mansion560

Nearby biomes: Dark Forest · Birch Forest · Ocean · Old Growth Birch Forest · Windswept Forest · River

Open in Seed Map →
Predicted biome map of Java 1.18 seed -1588467982553782255 around estimated spawn Explore this seed
#11

-1588467982553782255

Dark Forest is 23 blocks from estimated spawn.

Estimated spawn
48, -176 (Dark Forest)
Stronghold
2,493 blocks
  • Dark Forest23
  • Ruined Portal116
  • Village362

Nearby biomes: Dark Forest · Forest · Birch Forest · River · Ocean · Beach

Open in Seed Map →
Predicted biome map of Java 1.18 seed 1309262614353631545 around estimated spawn Explore this seed
#12

1309262614353631545

Dark Forest is 23 blocks from estimated spawn.

Estimated spawn
0, 0 (Dark Forest)
Stronghold
2,383 blocks
  • Dark Forest23
  • Ruined Portal314

Nearby biomes: Dark Forest · Birch Forest · River · Old Growth Birch Forest · Forest · Plains

Open in Seed Map →
Predicted biome map of Java 1.18 seed 5855653913599073100 around estimated spawn Explore this seed
#13

5855653913599073100

Dark Forest is 23 blocks from estimated spawn.

Estimated spawn
64, 56 (Dark Forest)
Stronghold
2,642 blocks
  • Dark Forest23
  • Ruined Portal225

Nearby biomes: Forest · Old Growth Birch Forest · Dark Forest · Birch Forest · River · Beach

Open in Seed Map →
Predicted biome map of Java 1.18 seed -3748028778921970133 around estimated spawn Explore this seed
#14

-3748028778921970133

Dark Forest is 23 blocks from estimated spawn.

Estimated spawn
0, 320 (Dark Forest)
Stronghold
2,683 blocks
  • Dark Forest23
  • Ruined Portal274

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

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Predicted biome map of Java 1.18 seed -3034452440152309656 around estimated spawn Explore this seed
#15

-3034452440152309656

Dark Forest is 23 blocks from estimated spawn.

Estimated spawn
16, 112 (Dark Forest)
Stronghold
1,503 blocks
  • Dark Forest23
  • Ruined Portal294

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

Open in Seed Map →
Predicted biome map of Java 1.18 seed -1151456710929265078 around estimated spawn Explore this seed
#16

-1151456710929265078

Dark Forest is 23 blocks from estimated spawn.

Estimated spawn
0, 0 (Dark Forest)
Stronghold
1,690 blocks
  • Dark Forest23
  • Ruined Portal340

Nearby biomes: Ocean · Dark Forest · Old Growth Birch Forest · Beach · River · Cold Ocean

Open in Seed Map →
Predicted biome map of Java 1.18 seed -5194316230219762885 around estimated spawn Explore this seed
#17

-5194316230219762885

Dark Forest is 23 blocks from estimated spawn.

Estimated spawn
0, 0 (Old Growth Birch Forest)
Stronghold
2,212 blocks
  • Dark Forest23
  • Ruined Portal279

Nearby biomes: Dripstone Caves · Dark Forest · Old Growth Spruce Taiga · River · Lush Caves · Old Growth Birch Forest

Open in Seed Map →
Predicted biome map of Java 1.18 seed -39774248431412907 around estimated spawn Explore this seed
#18

-39774248431412907

Dark Forest is 23 blocks from estimated spawn.

Estimated spawn
-16, 16 (Dark Forest)
Stronghold
2,118 blocks
  • Dark Forest23
  • Ruined Portal225

Nearby biomes: Forest · River · Jungle · Birch Forest · Sparse Jungle · Dark Forest

Open in Seed Map →
Predicted biome map of Java 1.18 seed 7489457874057681436 around estimated spawn Explore this seed
#19

7489457874057681436

Dark Forest is 23 blocks from estimated spawn.

Estimated spawn
0, 0 (Dark Forest)
Stronghold
2,709 blocks
  • Dark Forest23
  • Ruined Portal148

Nearby biomes: Old Growth Birch Forest · Forest · Dark Forest · Dripstone Caves · Birch Forest · River

Open in Seed Map →
Predicted biome map of Java 1.18 seed 7141835700430847511 around estimated spawn Explore this seed
#20

7141835700430847511

Dark Forest is 23 blocks from estimated spawn.

Estimated spawn
-16, 64 (Dark Forest)
Stronghold
1,905 blocks
  • Dark Forest23
  • Ruined Portal490

Nearby biomes: Dark Forest · River · Birch Forest · Forest · Old Growth Birch Forest · Jungle

Open in Seed Map →
Predicted biome map of Java 1.18 seed -5883331575837827251 around estimated spawn Explore this seed
#21

-5883331575837827251

Dark Forest is 51 blocks from estimated spawn.

Estimated spawn
0, 0 (Old Growth Birch Forest)
Stronghold
1,622 blocks
  • Dark Forest51
  • Ruined Portal102
  • Village475

Nearby biomes: Dark Forest · Old Growth Birch Forest · River · Ocean · Dripstone Caves · Birch Forest

Open in Seed Map →
Predicted biome map of Java 1.18 seed -910304449488424877 around estimated spawn Explore this seed
#22

-910304449488424877

Dark Forest is 51 blocks from estimated spawn.

Estimated spawn
0, 0 (Dripstone Caves)
Stronghold
2,418 blocks
  • Dark Forest51
  • Ruined Portal122
  • Village445

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

Open in Seed Map →
Predicted biome map of Java 1.18 seed 9046352387917873789 around estimated spawn Explore this seed
#23

9046352387917873789

Dark Forest is 51 blocks from estimated spawn.

Estimated spawn
-48, -112 (Swamp)
Stronghold
2,067 blocks
  • Dark Forest51
  • Ruined Portal330

Nearby biomes: Swamp · Dark Forest · Birch Forest · Ocean · Forest · River

Open in Seed Map →
Predicted biome map of Java 1.18 seed -2052964922303653834 around estimated spawn Explore this seed
#24

-2052964922303653834

Dark Forest is 51 blocks from estimated spawn.

Estimated spawn
48, 0 (Old Growth Pine Taiga)
Stronghold
2,443 blocks
  • Dark Forest51
  • Ruined Portal260

Nearby biomes: Forest · River · Old Growth Spruce Taiga · Windswept Forest · Birch Forest · Dark Forest

Open in Seed Map →
Predicted biome map of Java 1.18 seed -2961324906639601496 around estimated spawn Explore this seed
#25

-2961324906639601496

Dark Forest is 51 blocks from estimated spawn.

Estimated spawn
-160, 32 (Lush Caves)
Stronghold
1,953 blocks
  • Dark Forest51
  • Ruined Portal355

Nearby biomes: Ocean · Stony Shore · Lush Caves · Dark Forest · Jungle · Sparse Jungle

Open in Seed Map →
Predicted biome map of Java 1.18 seed -9107658769804706279 around estimated spawn Explore this seed
#26

-9107658769804706279

Dark Forest is 68 blocks from estimated spawn.

Estimated spawn
0, 0 (Jungle)
Stronghold
2,395 blocks
  • Dark Forest68
  • Jungle Temple226
  • Ruined Portal358
  • Village445

Nearby biomes: Jungle · Dark Forest · Sparse Jungle · Dripstone Caves · Forest · Bamboo Jungle

Open in Seed Map →
Predicted biome map of Java 1.18 seed -8798307659965342970 around estimated spawn Explore this seed
#27

-8798307659965342970

Dark Forest is 68 blocks from estimated spawn.

Estimated spawn
-240, 96 (Beach)
Stronghold
1,938 blocks
  • Dark Forest68
  • Ruined Portal256

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

Open in Seed Map →
Predicted biome map of Java 1.18 seed -6366026530519579478 around estimated spawn Explore this seed
#28

-6366026530519579478

Dark Forest is 68 blocks from estimated spawn.

Estimated spawn
0, 0 (Birch Forest)
Stronghold
2,471 blocks
  • Dark Forest68
  • Ruined Portal160

Nearby biomes: Dark Forest · Forest · Birch Forest · Ocean · Old Growth Birch Forest · Lush Caves

Open in Seed Map →
Predicted biome map of Java 1.18 seed -1355842956042833287 around estimated spawn Explore this seed
#29

-1355842956042833287

Dark Forest is 82 blocks from estimated spawn.

Estimated spawn
80, -16 (Birch Forest)
Stronghold
2,312 blocks
  • Dark Forest82
  • Ruined Portal193
  • Village452

Nearby biomes: Forest · Plains · Savanna · River · Dark Forest · Lush Caves

Open in Seed Map →
Predicted biome map of Java 1.18 seed 9194394650798666600 around estimated spawn Explore this seed
#30

9194394650798666600

Dark Forest is 82 blocks from estimated spawn.

Estimated spawn
0, 0 (Birch Forest)
Stronghold
2,305 blocks
  • Dark Forest82
  • Ruined Portal241
  • Woodland Mansion890

Nearby biomes: Old Growth Birch Forest · Birch Forest · Dark Forest · Ocean · Forest · River

Open in Seed Map →
Predicted biome map of Java 1.18 seed 8474298694960261505 around estimated spawn Explore this seed
#31

8474298694960261505

Dark Forest is 93 blocks from estimated spawn.

Estimated spawn
16, 16 (Birch Forest)
Stronghold
2,406 blocks
  • Dark Forest93
  • Ruined Portal129

Nearby biomes: Ocean · Old Growth Birch Forest · Lukewarm Ocean · Sparse Jungle · Dark Forest · Forest

Open in Seed Map →
Predicted biome map of Java 1.18 seed 8839967164225670317 around estimated spawn Explore this seed
#32

8839967164225670317

Dark Forest is 113 blocks from estimated spawn.

Estimated spawn
0, 0 (Old Growth Birch Forest)
Stronghold
2,703 blocks
  • Dark Forest113
  • Ruined Portal195
  • Village352
  • Woodland Mansion720

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

Open in Seed Map →
Predicted biome map of Java 1.18 seed 4038165814503471842 around estimated spawn Explore this seed
#33

4038165814503471842

Dark Forest is 113 blocks from estimated spawn.

Estimated spawn
-16, -48 (Birch Forest)
Stronghold
1,923 blocks
  • Dark Forest113
  • Ruined Portal210
  • Village285

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

Open in Seed Map →
Predicted biome map of Java 1.18 seed -3056459963152996192 around estimated spawn Explore this seed
#34

-3056459963152996192

Dark Forest is 113 blocks from estimated spawn.

Estimated spawn
0, 0 (Jungle)
Stronghold
2,058 blocks
  • Dark Forest113
  • Village318
  • Ruined Portal432

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

Open in Seed Map →
Predicted biome map of Java 1.18 seed -2371094549241230564 around estimated spawn Explore this seed
#35

-2371094549241230564

Dark Forest is 113 blocks from estimated spawn.

Estimated spawn
0, -32 (Old Growth Birch Forest)
Stronghold
2,260 blocks
  • Dark Forest113
  • Ruined Portal253
  • Pillager Outpost295

Nearby biomes: Ocean · Forest · Beach · Cold Ocean · Plains · Old Growth Birch Forest

Open in Seed Map →
Predicted biome map of Java 1.18 seed 2055267657438997192 around estimated spawn Explore this seed
#36

2055267657438997192

Dark Forest is 113 blocks from estimated spawn.

Estimated spawn
-48, -16 (Birch Forest)
Stronghold
2,349 blocks
  • Dark Forest113
  • Ruined Portal453

Nearby biomes: Dark Forest · Forest · Old Growth Birch Forest · Plains · River · Birch Forest

Open in Seed Map →
Predicted biome map of Java 1.18 seed -1542180528286310968 around estimated spawn Explore this seed
#37

-1542180528286310968

Dark Forest is 113 blocks from estimated spawn.

Estimated spawn
0, 0 (Old Growth Birch Forest)
Stronghold
2,512 blocks
  • Dark Forest113
  • Ruined Portal360

Nearby biomes: Old Growth Birch Forest · Forest · Taiga · Birch Forest · River · Plains

Open in Seed Map →
Predicted biome map of Java 1.18 seed -5190901594639764493 around estimated spawn Explore this seed
#38

-5190901594639764493

Dark Forest is 138 blocks from estimated spawn.

Estimated spawn
-16, 64 (Birch Forest)
Stronghold
2,316 blocks
  • Pillager Outpost115
  • Dark Forest138
  • Ruined Portal241

Nearby biomes: Ocean · Forest · Birch Forest · Plains · Deep Ocean · Stony Shore

Open in Seed Map →
Predicted biome map of Java 1.18 seed -5626466939561800330 around estimated spawn Explore this seed
#39

-5626466939561800330

Dark Forest is 138 blocks from estimated spawn.

Estimated spawn
0, 0 (Old Growth Pine Taiga)
Stronghold
1,491 blocks
  • Dark Forest138
  • Ruined Portal322

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

Open in Seed Map →
Predicted biome map of Java 1.18 seed -7699659618593408288 around estimated spawn Explore this seed
#40

-7699659618593408288

Dark Forest is 145 blocks from estimated spawn.

Estimated spawn
-32, -80 (Old Growth Spruce Taiga)
Stronghold
2,128 blocks
  • Dark Forest145
  • Village187
  • Ruined Portal295
  • Ocean Monument493

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

Open in Seed Map →
Predicted biome map of Java 1.18 seed 6434155392121966926 around estimated spawn Explore this seed
#41

6434155392121966926

Dark Forest is 145 blocks from estimated spawn.

Estimated spawn
-32, -80 (Jungle)
Stronghold
1,935 blocks
  • Dark Forest145
  • Village266
  • Ruined Portal333

Nearby biomes: Plains · Birch Forest · Savanna · Jagged Peaks · Forest · Grove

Open in Seed Map →
Predicted biome map of Java 1.18 seed -2095957670934326899 around estimated spawn Explore this seed
#42

-2095957670934326899

Dark Forest is 152 blocks from estimated spawn.

Estimated spawn
0, 0 (Taiga)
Stronghold
2,396 blocks
  • Dark Forest152
  • Ruined Portal292
  • Woodland Mansion682

Nearby biomes: Taiga · Forest · Old Growth Pine Taiga · Old Growth Birch Forest · River · Birch Forest

Open in Seed Map →
Predicted biome map of Java 1.18 seed -7091825169682206806 around estimated spawn Explore this seed
#43

-7091825169682206806

Dark Forest is 152 blocks from estimated spawn.

Estimated spawn
16, 16 (Birch Forest)
Stronghold
2,172 blocks
  • Dark Forest152
  • Ruined Portal208

Nearby biomes: Forest · Birch Forest · Meadow · Dripstone Caves · Old Growth Birch Forest · River

Open in Seed Map →
Predicted biome map of Java 1.18 seed -8238877518708572055 around estimated spawn Explore this seed
#44

-8238877518708572055

Dark Forest is 165 blocks from estimated spawn.

Estimated spawn
176, -176 (Old Growth Birch Forest)
Stronghold
2,421 blocks
  • Dark Forest165
  • Ocean Monument258
  • Ruined Portal339

Nearby biomes: Deep Ocean · Ocean · Old Growth Birch Forest · Dark Forest · River

Open in Seed Map →
Predicted biome map of Java 1.18 seed -1346818534358834955 around estimated spawn Explore this seed
#45

-1346818534358834955

Dark Forest is 165 blocks from estimated spawn.

Estimated spawn
0, 0 (Taiga)
Stronghold
1,676 blocks
  • Dark Forest165
  • Village288
  • Ruined Portal391

Nearby biomes: Forest · Taiga · Old Growth Birch Forest · Birch Forest · Swamp · Plains

Open in Seed Map →
Predicted biome map of Java 1.18 seed 7818240775556655446 around estimated spawn Explore this seed
#46

7818240775556655446

Dark Forest is 165 blocks from estimated spawn.

Estimated spawn
64, -32 (Forest)
Stronghold
1,927 blocks
  • Dark Forest165
  • Ruined Portal280
  • Village375

Nearby biomes: Forest · Old Growth Birch Forest · Birch Forest · Dark Forest · River

Open in Seed Map →
Predicted biome map of Java 1.18 seed -2713742183326937422 around estimated spawn Explore this seed
#47

-2713742183326937422

Dark Forest is 165 blocks from estimated spawn.

Estimated spawn
16, -48 (Birch Forest)
Stronghold
2,687 blocks
  • Ruined Portal112
  • Dark Forest165

Nearby biomes: Old Growth Birch Forest · Forest · River · Dripstone Caves · Lush Caves · Birch Forest

Open in Seed Map →
Predicted biome map of Java 1.18 seed -2212341932993055059 around estimated spawn Explore this seed
#48

-2212341932993055059

Dark Forest is 165 blocks from estimated spawn.

Estimated spawn
0, 0 (Forest)
Stronghold
2,572 blocks
  • Ruined Portal158
  • Dark Forest165

Nearby biomes: Old Growth Birch Forest · Ocean · Dark Forest · Forest · Beach · River

Open in Seed Map →
Predicted biome map of Java 1.18 seed -3796723246397986344 around estimated spawn Explore this seed
#49

-3796723246397986344

Dark Forest is 182 blocks from estimated spawn.

Estimated spawn
0, 0 (Swamp)
Stronghold
1,422 blocks
  • Dark Forest182
  • Ruined Portal298

Nearby biomes: Swamp · Old Growth Birch Forest · Birch Forest · Forest · River · Windswept Forest

Open in Seed Map →
Predicted biome map of Java 1.18 seed 8947361173881068683 around estimated spawn Explore this seed
#50

8947361173881068683

Dark Forest is 204 blocks from estimated spawn.

Estimated spawn
0, 0 (Birch Forest)
Stronghold
2,332 blocks
  • Dark Forest204
  • Ruined Portal311

Nearby biomes: Birch Forest · Old Growth Birch Forest · Forest · Dark Forest · River · Swamp

Open in Seed Map →

About these 1.18 seeds

A dark forest or pale garden within 400 blocks of estimated spawn, or deep dark at Y -40 within 400 blocks is required for every seed in this category. Lists are computed separately for the version printed on each card.

1.18 (Caves & Cliffs Part II) rewrote terrain generation completely: world height stretched to Y −64…319, six new mountain biomes, and cave systems bigger than anything before it. It's also where modern seeds begin — a 1.17 seed generates a totally different world — and 1.18.2 is still a heavily-played modpack version. Every seed below was verified on 1.18 generation itself.

Verified for Java Edition 1.18 (Caves & Cliffs Part II). Biomes, terrain and structure locations are identical across 1.18 – 1.18.2, so 1.18.2 modpack worlds match these maps.

For the current Java 26.3 release, see the main scary seeds — or the same list for 26.3 · 1.21.4 · 1.20 · 1.19 · 1.16. All 1.18 lists live under best 1.18 seeds.

Frequently asked questions

How is this different from the main scary seeds page?
These seeds are computed for Java 1.18. The main scary 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 1.18 line — 1.18 through 1.18.2, including 1.18.2 modpacks: biomes, terrain and structure positions are identical across the patches (1.18.2 only fixed cosmetic generation bugs like underwater snow patches). Later versions keep the same terrain engine but add structures and tweak placements (1.19's ancient cities, 1.20's trail ruins), so verify on our newer lists if you're playing past 1.18.
Do these seeds work on Bedrock Edition?
No — Java and Bedrock generate different worlds from the same seed. These lists are Java Edition only.