User blog comment:Eitan101/Swamp biome idea/@comment-4123347-20120202170711

We really need more biomes. There are not nearly enough environments and mobs IMO. If you start to brainstorm a little, I think you could find more that we currently have in under a minute. Glaciers, mountains, underground oceans, swamps as you said, volcanoes, gigantic chasms, cloud layers. Implementing them will obviously take longer, but it's not impossible.