Minecraft wiki entry for Beginner%27s_guide, associated text: The Minecraft world is divided into different areas called "biomes". Different biomes contain different blocks and plants and change how the land is shaped. There is an advancement that includes finding all the biomes; this is better explained on the advancements page. Biomes affect you, especially at the beginning of the game, but you need not worry about specific biomes until you have learned how to play the game. If you are curious, you may want to read more about biomes on the biomes page. That said, there are a few cases you should worry about: