It's designed to give you more control over the way you launch and manage your game session in UT3. At its core it works as a Mutator that hooks into the game, providing its unique management operations, however, it does much more. It replaces the UT3 Main Menu and provides direct links to the MapMixer Menus as well as the standard Settings Menus. MapMixer has been specifically designed from the ground up for both standalone and server environments.