Find every Spider Dungeon on your Minecraft seed — Java 26.3 & Bedrock 1.26.62, any seed, free, no sign-up.
Quick answer: A Spider Dungeon is a small underground room built around a spider spawner, with one or two loot chests. Spider spawners are rarer than zombie ones — roughly a quarter of all dungeons — yet one is usually close: half of worlds have one within 100 blocks of spawn on Java and 120 on Bedrock. This finder marks every spider dungeon at 91% accuracy on Java and 86% on Bedrock.
Spider dungeons — “monster rooms” with a spider spawner — generate underground in any Overworld biome as small cobblestone-and-mossy-cobblestone rooms. These hold ordinary spiders, not the cave spiders found in mineshafts.
Usually close. Across 200 random worlds, half had a spider dungeon within 100 blocks of spawn on Java and 9 in 10 had one within 180; on Bedrock the same figures are 120 and 200. Every marker here is a spider spawner specifically, so you do not have to check zombie and skeleton rooms on the way. Open a marker for its coordinates, then dig down or follow caves to reach the room.
| How close | Java 26.3 | Bedrock 1.26.62 |
|---|---|---|
| Half of worlds have one within | 100 blocks | 120 blocks |
| 9 worlds in 10 have one within | 180 blocks | 200 blocks |
| Worlds with one within 1,000 blocks | Every world tested | Every world tested |
Measured with this finder on 200 random worlds in each edition, from the point where each world spawns you. Distances are rounded.
Spider spawners yield string and spider eyes — string for wool, leads, bows and fishing rods; spider eyes for Potions of Poison and fermented spider eyes. The one or two chests can also hold leather, discs, name tags and enchanted books.
No — the same seed puts its dungeons in different places on each edition, so pick your edition above before you read coordinates. On both editions about one dungeon in four holds a spider spawner, half hold zombies and the rest skeletons. The finder covers Minecraft 26.3 on Java and 1.26.62 on Bedrock, and markers read 91% accurate on Java and 86% on Bedrock.
| Generates in | Spacing / separation | Version added | Finder accuracy |
|---|---|---|---|
| Underground in any Overworld biome (small cobblestone / mossy rooms) | Common underground — about 1 dungeon in 4 has a spider spawner | Java Alpha · Bedrock 1.0 | Java 91% · Bedrock 86% |
What's inside: A spider spawner and one or two loot chests with leather, music discs, enchanted books, name tags and Golden Apples