Microsoft is launching a beta version of Project Spark today, its game-maker project for Windows 8.1, Xbox 360, and the new Xbox One console. Project Spark is essentially a tool to allow developers, enthusiasts, and gamers to build a game within a game. Players can build custom worlds, characters, and animations from an Xbox One or a Windows 8.1 PC to play across both platforms. Its similar in concept to Sonys LittleBigPlanet, but Microsoft is making use of its history with Kodu and pushing SmartGlass integration to allow players to interact with their games and collaborate from a tablet while they build and play on an Xbox One.