Unity 3 is a game development tool that has been designed to let you focus on creating amazing games. Check out the demo reel below. It’s fairly long at just over 10 minutes but is well worth watching through to the end. There is a free version you can download or if you are a developer looking to make money form your creations then you will need the Pro version at $1500. For more info on the various versions (iOS, Android, Wii etc) and what you get for your money, visit http://unity3d.com/unity/licenses.