GameGain GameGain uses the same GUI as its counterpart, but it packs one less option in the main window, that which allows you to choose the Internet type. Other than that, it’s pretty much the same thing and does the same things, almost. The app is built to allow people to increase the performance of their machines during gameplay, which in turn leads to happier gamers. To improve framerate, internet speed and general performance with GameGain, all you need to do is run it, and click the ‘Optimize Now’ button. It’s all very convenient.