Platinum Arts Sandbox is the game design tool based on the Cube 2 engine that allows users to quickly and easily create and edit their own worlds in game, even cooperatively. It is free, open source, and easy to use for Kids and Adults! The 2.2.3 release is intended to be a testing release before our 2.3 release. It offers many exciting features and it is heavily updated from the 2.2 release :D Bugs and issues might appear, please report them to us! Check it out and let us know what you think!