1.21 Island Seeds
22 Minecraft 1.21 island seeds, each with screenshots, coordinates and the versions it works on.
22 seeds found
Hollow Lush Cave Spawn Island
Spawn on top of a snowy island. Beneath the surface you'll find a huge exposed lush cave that runs all the way through the island.
Biome Diverse Continent Spawn
Spawn on an amazing continent with lots of biome diversity including large mountains, huge exposed caves, and a nearby stronghold (Bedrock & Java). Includes multiple structures like villages, pillagers, and ancient cities. One village even crosses 4 different biomes (Java).
Quad Village Mangrove Swamp Island at Spawn
Spawn on an island with a Mangrove Swamp and a perfectly spaced (144 blocks apart) quad village.
Huge Cherry Island Over 1,000 Blocks from the Mainland
This seed features an extremely rare cherry grove island that is both large in size and immensely isolated!
Cherry Island Nestled Between Two Villages
This is a ridiculously rare seed that required a very unusual noise-map configuration to generate. The result is a highly scenic cherry island positioned between two villages. The island itself works on both Bedrock and Java, while the villages generate on Java only. Hope you all enjoy!
18k block continent with all biomes for Bedrock and Java, and all structures (Java only)
This is the largest continent ever found in Minecraft (that I am aware of). It was found using a custom program made by me, is 18k blocks long and 14k wide, and has every biome for Bedrock and Java, and every structure for Java. The only missing structure for Bedrock is the woodland mansion. There are WAY too many POIs to share, but I will link a map of the seed on mcseedmap.net so you can explore!! Map: https://mcseedmap.net/1.21.5-Java/5236799556370854014#x=-6256&z=-2628&l=-5.3
Small Island with Tall Mountain
Out of sight of any mainland, this beautiful snowy mountain island is a perfect building spot.
Large Continent at Spawn
This is the largest continent spawn I’ve ever found, stretching over 18,000 blocks and containing every biome and every structure in the game. The red dot in the screenshot marks the northernmost point of the continent, which is separated by a river. There is no woodland mansion in Bedrock. Screenshot taken from the Chunkbase seed map.
Meadow and Flower Forest Island Surrounded by a Complete Cherry Grove Ring
The world spawns you directly in the middle of the island.
Survival Shipwreck
Ultimate survival challenge - start on shipwreck mast in endless ocean. For hardcore players only! You spawn on a shipwreck in the middle of the ocean with no land in sight. Can you survive? This seed was originally discovered via a public roundup on PCGamesN. It has been reuploaded here with a custom title, description, and screenshot to help populate the site. If you are the original finder of this seed, or know who is, please get in touch and proper credit can be added - or ownership transferred if they have a seedb account.