MultiWorld for Minecraft Forge 1.5.1 or 1.5.2 or 1.7.2 or 1.7.10
Latest version is 1.2.7 and fixes crash in full overworld types.

MultiWorld, a basic but functional Forge Dimension Provider. Create one or more custom new dimensions. Gives a choice of different worldTypes, and adds a custom one with a choice of any number of biomes. Also allows old world saves to be imported as a dimension.

WIKI guide relocated to the page tab above.

A forge mod for use with Minecraft 1.7.2 with Forge installed. For a 1.5.2 version of this mod, see Too Many Biomes

Example Dimension
A dimension created using biomeCommands=allow:3,15,164
Extreme Hills (left top), Mushroom Island Shore (middle), Savanna Plateau M (top right)
Chat shows results of /multiworld 3 command to get info on this dimension (which is 3)

Configuration

The Config folder inside Minecraft contains the file MultiWorld.cfg which is easily edited with any form of text editing program, eg notepad
options.dimensions how many extra dimensions you want this mod to add (defaults to 2)
options.providerId Provider ID, in case another mod conflicts (default 21)
worldTypeMW WorldType ID , in case another mod conflicts (default 7)

There is also a block of settings for each dimension generated
biomeCommands allow:*; to add all biomes.
By listing their biomeIDs you can choose which ones you want, allow:3,0; would only add ExtremeHills and Ocean Biomes.
dimension_ID Stores which dimension is used, will auto configure to avoid conflicts.
isFullOverworld Use Overworld style world spawn and pre-generation of chunks (default false)
name Allows you to name your dimensions (default is DIMx where x is the dimension_ID)
worldType this is where you choose what worldType you want, see table below (default is mw:multiBiome)

known worldTypes

MWmultiBiome MultiWorld
BOP Biomes O Plenty
flat Minecraft flat world
default Minecraft overworld
largeBiomes Minecraft large biomes (as used on Minecraft servers)
amplified Minecraft amplified
default_1_1 Minecraft

Commands

To assist, a few chat commands have been added.
/listBiomes Lists all known BiomeIDs, and their names. Add a number to the end to display the list one page at a time.
/multiworld List all dimensions generated by this mod, if you add the dimensionID it will list more info (eg /Multiworld 2)
/tpd x Teleport to the spawn point dimension x, which x is the dimensionID.

known bugs

Beds work in dimensions created by the mod, however they don't set it back to day.
Sometimes spawns underwater, which is a problem when its a Deep Ocean biome.

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