You could have downloaded BattleMu 1.07 from our software library for free. Main.exe is the most frequent filename for this program's installer. The most popular version among BattleMu users is 1.0. This free tool was originally created by BattleMu. The software is categorized as Games.
From the developer:
BattleMu -enjoy a wonderful online gaming experience in this exciting game. You can choose from many characters, grow your characters strength, fight against vicious opponents, choose from many weapons, interact with other players all over the world and much more
You may want to check out more software, such as The Witcher: Enhanced Edition Director's Cut, which might be related to BattleMu.