After years of waiting, you can finally change and replace biomes in Minecraft. We're not just talking about transporting blocks and mobs from one biome to another. Instead, a new command in Minecraft 1.20 lets you move all surrounding features, mob spawns, and other objects in a biome to any location in the game. This unlocks tons of possibilities, especially for the best Minecraft maps and some previously impossible Minecraft mob farms. But let's not get ahead of ourselves and first learn how to change biomes in Minecraft with the fillbiome command.

Please note that our guide covering the fillbiome command is based on Minecraft 1.19.3 Pre-Release 2 and this command is still being tested. So its syntax, function and mechanics may undergo changes before the final release.

In Minecraft, the term biome refers to the environmental characteristics of a particular region, including atmosphere, sky, ambient sounds, and even texture color. Not to forget, some Minecraft mobs can only spawn in certain biomes. For example, the desert biome has a high temperature, no spawn mechanics for plants, and spawns camels and scales in the form of exclusive mobs. Scales are a variant of zombies that only spawn in the deserts.

As you may notice, we are not talking about blocks when we describe any biome. This is because you can replace blocks in a biome but cannot change their surrounding functions. It makes it impossible for the Dutch mob to play in the overworld and vice versa. Well, at least until you decide to use the "fillbiome" command. When run, this command changes the default biome-based features of a location with the features of another biome in Minecraft. More on that later.