Crystal Tools is a game engine created and used internally by the Japanese company Square Enix. It combines standard libraries for elements such as graphics, sound and artificial intelligence while providing game developers with various authoring tools. The target systems of Crystal Tools are the PlayStation 3, the Xbox 360, Microsoft Windows and the Wii. This was decided with the intention of making cross-platform production more feasible. The idea for the engine sprang from Square Enix's desire to have a unified game development environment in order to effectively share the technology and know-how of the company's individual teams.