Sky Dimension

Sky Dimension is a third dimension the game can build but never creates.

Reaching it

There is no way in. A world is opened by dimension number, and only 0 and -1 are ever asked for. Single-player builds the Overworld and the Nether, and a portal switches between the two. A server holds an array of two worlds and sends a travelling player to whichever one it is not in.

Terrain

Terrain comes from the same kind of density field as the Overworld's, but only stone is placed. No water fills the space below sea level and no bedrock closes off the bottom of the world.

The field is biased downwards by a constant, then blended towards a large negative value within 8 blocks of y=0 and again from y=8 up to the top of the world. Stone is confined to the lower part of the world and never reaches the top of it.

The surface is grass over dirt, and caves are cut by the same generator the Overworld uses.

Population is the Overworld's, run with the biome always Sky: the same ores, clay, lakes, dungeons and springs, the same flowers, mushrooms, Sugar cane and pumpkins, and one tree in one chunk in ten. No tall grass, dead bushes or cacti generate at all. Temperature is fixed at 0.5, so snow settles on any surface above y=64.

Light and weather

The sun never moves, and sky light is never reduced. A block under open sky reads light 15 at every point of the clock.

Clouds sit at y=8, below the terrain rather than above it. There is no sunrise or sunset colour, and the sky beneath the world is drawn in the same colour as the sky over it.

Rain and thunderstorms run as they do in the Overworld. Rain lays no snow and never brings lightning: the Sky biome has neither snow nor rain enabled.

Mobs

Chickens are the only mob on the Sky biome's spawn lists. No monster and no water creature spawns.

Data values

• Dimension: 1

The dimension has no save folder of its own. Only the Nether is given one, and everything else is written into the world folder itself.