BlueStack is application which runs better on windows PC. BlueStacks runs android emulator on PC. You can install and login to your google account and install apps and games on it. This enables you to play games on PCs itself. BlueStacks is getting popular as playing games on PC is much easier and also saves on batter power on your device. It supports most games, but there will be issue with heavy graphic intensive games.
A Mac preview version is also available but its not as good as PC version and it doesn’t support as many app / games as PC version. Visit www.bluestacks.com for downloading the application