World generation

So I'm leaning towards making RTS/Survival game where you control one or more characters as they try to survive in some harsh terrains. This will require quite a large world map so I'm going to generate it procedurally (That's how all the cool kids are doing it nowadays).

I found this sweet guide on how to to do world generation and decided to try it out myself. I'm currently just using temperature for defining biomes and a perlin noise heightmap to define what is land, but I think it still yields decent results.

White = Tundra
Purple = Taiga
Dark green = Temperate forest
Light green = Rain forest
Yellow = Desert