MapMixer is designed to give you more control over the way you launch and manage your game session in Unreal Tournament 3. It replaces the the game's Main Menu and let's you launch either a quick-offline match or a complete session where every map is specifically customised - or randomised. It's a whole new way to manage your UT3 experience.
This screenshot shows Personal Character Customisation. Unlike the original UT3 Menu, the character preview can be rotated at any angle and zoomed, simply by clicking on the character and dragging the mouse. Clicking with the middle-mouse button resets it all back to normal. You can also preview your character using various standard animations. Save your character customsation as a Preset so you can recall it at a later time or quickly load another Preset character from a MapMixer Faction.
The MapMixer Faction Editor hooks into this menu, allowing you to pick any character from a Faction and customise its parts, which is particularly useful if you want to create your own unique customised characters.