Project Spark has cross-play between Windows 8, Xbox One, and Xbox 360
Microsoft announced Project Spark today at its E3 conference. It's a game about making your own game which you can share with other gamers. You can build your own world, obstacles and enemies. Other players can even re-mix your game and build on an idea. The open-world digital game will allow you to play across Xbox One, Windows 8 and Xbox 360. Screenshots are below.