Get the free demo of IceBreaker. The demo is fully playable but the user preferences are locked.
Give the game a try. To instantly unlock all features simply purchase the game at any time.
Supports Windows 7, Vista, and XP. Download the package, run it, and follow the installer instructions.
Windows installer package: IceBreaker.msi
Supports Mac OS 10.4+ (Snow Leopard, Leopard, and Tiger). Download the image, open it, and drag the game into your Applications folder.
Mac disk image: IceBreaker.dmg
If you are not sure if your system meets the requirements just give the game a try. The download is free.