http://fuse.microsoft.com/kodu/
[quote:2lntiy8r]Kodu is a visual programming language made specifically for creating games. It is designed to
be accessible for children and enjoyable for anyone.
KEY FEATURES
Kodu provides an end-to-end creative environment for designing, building, and playing your own new games.
High-level language incorporates real-world primitives: collision, color, vision
Runs on Xbox 360 and PC
Interactive terrain editor
Bridge and path builder
Terrain editor - create worlds of arbitrary shape and size
20 different characters with different abilities