One Biome Plains [Achievements Enabled]

This addon radically transforms the Overworld by replacing the vast majority of its biomes. Now, the entire dimension will be composed solely of a Plains biome, with the exception of Rivers and Oceans, which continue to generate in their vanilla form.

The terrain within the Plains biome retains its natural characteristic hills and elevations, so it is not an absolute flat plain, but a predominantly smooth and buildable landscape. It is the perfect solution for those who enjoy building or want an experience similar to the "Superflat World" creation option, but much more playable and feature-rich.

The main advantage is that this Plains world does not remove vanilla structures. All structures that normally generate in plains (such as villages and pillager outposts), as well as temples, woodland mansions, strongholds, and others, will still appear in their corresponding locations, seamlessly integrated into this new uniform landscape.