Quick answer: An island spawn seed starts you on an island with ocean on every side, up to 768 blocks across. This finder searches for worlds where spawn itself is on such an island; verified seeds for Java 26.3, Large Biomes and Bedrock 1.26.51 are listed below, each with its island size and a one-click map.
| Criteria | Spawn on an island at most 768 blocks across, surrounded by ocean |
|---|---|
| Editions | Java, Large Biomes and Bedrock |
| Versions | Java 26.3 · Bedrock 1.26.51 |
| Verified seeds ready | 12 per edition (listed above), each with a measured accuracy % |
This page opens the finder pre-set to an island start: spawn has to be on land that ocean surrounds, no more than 768 blocks across. The seeds below already match — copy one and open it on the map, or press Search for fresh ones.
Each result shows how far the island reaches across, in blocks. You can change the size in the Terrain group: small (up to 256 blocks), medium (up to 768) or large (up to 2,048).
Yes. Island shapes differ between editions, so every seed here is verified separately for Java 26.3, Large Biomes and Bedrock 1.26.51. Pick your edition and the matching seeds show.
Each result shows a measured accuracy % for its island, and a seed only appears here after the engine independently re-verifies it. We show the number on every result.
| Seed Finder (this tool) | Biome finder / seed map | |
|---|---|---|
| What it does | Discovers a new seed that matches your criteria | Renders a seed you already have |
| You start with | Criteria — structures and biomes near spawn | A seed number you already know |
| You get | A list of matching seeds, each with a map | A map of that one seed |
| Tool | Java | Bedrock | Current version | Map per result | Accuracy % | Localized |
|---|---|---|---|---|---|---|
| Minecraft Search | Yes | Yes | 26.3 / 1.26.51 | Yes | Yes | 28 languages |
| MC Seed View | Yes | No | Yes | Yes | No | English only |
| mcseedmap.net | Yes | Yes | Yes | Yes | No | Partial |
| mcseeder | Yes | No | caps at 1.21 | Limited | No | English only |
| seedmap.app | Yes | Partial | Yes | Yes | No | No |
| Chunkbase | No general criteria seed finder — only a slime-chunk finder | |||||