Settlers United is a collaborative Community Project created by modders from both the Settlers III and Settlers IV communities to bring both communities closer together on a shared platform. The project was originally founded in summer of 2021 during the closing days of the Settlers IV World Championship. Since then, it has become one of the biggest fan projects in the entire Settlers community.

To use all the advantages from Settlers United the game (S3 or S4) needs to be started through settlers united.

Settlers United does not come with the actual game, so you need to buy it from official sources.