I have some code:

 

                GameRegistry.removeBiome(BiomeGenBase.beach);
	GameRegistry.removeBiome(BiomeGenBase.desert);
	GameRegistry.removeBiome(BiomeGenBase.desertHills);
	GameRegistry.removeBiome(BiomeGenBase.extremeHills);
	GameRegistry.removeBiome(BiomeGenBase.extremeHillsEdge);
	GameRegistry.removeBiome(BiomeGenBase.forest);
	GameRegistry.removeBiome(BiomeGenBase.forestHills);
	GameRegistry.removeBiome(BiomeGenBase.frozenOcean);
	GameRegistry.removeBiome(BiomeGenBase.frozenRiver);
	GameRegistry.removeBiome(BiomeGenBase.hell);
	GameRegistry.removeBiome(BiomeGenBase.iceMountains);
	GameRegistry.removeBiome(BiomeGenBase.icePlains);
	GameRegistry.removeBiome(BiomeGenBase.jungle);
	GameRegistry.removeBiome(BiomeGenBase.jungleHills);
	GameRegistry.removeBiome(BiomeGenBase.mushroomIsland);
	GameRegistry.removeBiome(BiomeGenBase.mushroomIslandShore);
	GameRegistry.removeBiome(BiomeGenBase.ocean);
	GameRegistry.removeBiome(BiomeGenBase.plains);
	GameRegistry.removeBiome(BiomeGenBase.river);
	GameRegistry.removeBiome(BiomeGenBase.sky);
	GameRegistry.removeBiome(BiomeGenBase.swampland);
	GameRegistry.removeBiome(BiomeGenBase.taiga);
	GameRegistry.removeBiome(BiomeGenBase.taigaHills);
                GameRegistry.addBiome(new BiomeGenCopperFields(40));

 

Should this not, from my understanding, remove all of the Vanilla biomes and leave only my custom biome? Upon loading up MC, I see plenty of vanilla biomes, so is there something that I am missing here? I am working with forge build Build 1.6.4-9.11.1.916. Thanks in advance.

This method only affects the default world type array of biomes.

Also there are biomes that are hard coded into the worldgen in the GenLayer files.

Ah, okay. I was hoping that this would be a quick and dirty way to add/remove biomes. Thanks guys.