Mob Biome Mapper
Neuromancer

Allows mobs to spawn in biomes that don't support them.

Better Biomes by Atlante
Neuromancer

This mod adds some of the subtle understated beauty of nature to your biomes to make the world look more natural. It was created by Atlante.

Swamplified
Neuromancer

This mod adds a few more nice touches to Atlante's Swamp biome mod

Lua2Mts
Neuromancer

Allows converting .lua schematics files to .mts files.

Mob BiomeDb Mapper
Neuromancer

Allows mobs to spawn in biomes that don't support them (Using info from BiomeDb)

Boulders
Neuromancer

Adds pushable boulders which spawn in dirt & stone. They tumble when they wind up on top of each other and cause damage when they fall on you.

Dirt Tunneler
Neuromancer

Makes dirt deeper and you can tunnel through it just by walking through it. Press spacebar/shift to tunnel upward/downward with auto placed ladders.

Boulder Dig
Neuromancer

Creates gameplay for the game Boulder Dig (inspired by Boulder Dash). Find the boulders and gems scattered throughout the regularly generated world. 2nd option is more densely packed levels.