Platinum Arts Sandbox Free 3D Game Maker is a game design tool based on the Cube 2 engine that allows users to quickly and easily create and edit their own worlds while playing the game, even cooperatively.
Watch Video | Homepage | License: Platinum Arts Sandbox License
Packages are available for the following releases:
Ubuntu 9.04: 2.4-1~getdeb1
Ubuntu 9.10: 2.5-1~getdeb3