Old Worlds are a World Type that was added in the Pre-Release. Terrain in Old Worlds is limited to a 256x256 area, and has an Invisible Bedrock Barrier around it.


Old world in early versions (pre-0.9)

They were the first world types to be added to Minecraft.

Pre-Update 0.9.0

Before Update 0.9.0, Old worlds were the only type of worlds that could generate. They had a simple terrain generation algorithm and did not have features such as foliage color, new Blocks and Ores, etc.

After Update 0.9.0

After 0.9.0, Old Worlds were given as a second option after Infinite Worlds. They now have new blocks, Biomes, features and Mobs that were added in Update 0.9.0, but due to their small size, they do not include all the biomes at once. They can also be converted into Infinite Worlds.


  • It is not possible to break the Invisible Bedrock layer.
    • Projectiles can be shot through it, however.
    • The player can walk on the invisible bedrock layer.
    • A glitch with the Old World is that if a mob or entity is spawned at the world height limit at the edge of Old Worlds and then pushed or knocked onto the top of the invisible bedrock, then the mob or entity will stutter and glitch out until the Player exits the world.
  • In an old world, Nether Portals cannot be lit, making it impossible to access the Nether in Old Worlds. Therefore, the Player must convert it into an Infinite World in order to gain access to the Nether.
    • However, one possible way to enter the Nether in an Old World is by placing a Portal Block, which is available by inventory editing. The portal block will transport the Player to the Nether.
      • If the Nether is generated this way, it will have a 256x256 block limit just as the Overworld, and it may be glitchy.
  • If the player looks through a cloud in an Old World, Water, Lava and the Nether Reactor Core will not be seen.
  • Generated Structures spawn very rarely, as in the 'notch' seed, which spawns a Village.
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