Game Fire is designed to free up resources on your PC so there are more for games to use, and they should run faster and more smoothly. The program includes a defragmenting tools, and system for turning off unecessary processes.
Once installed, before you can use Game Fire you need to set it up. This means going through a list of processes that the app will suspend if it's activated. There is nothing dangerous about Game Fire, and any system changes it makes aren't permanent.
After setup, Game Fire can take a few moments to switch game mode on, and once it has, you should see a drop in system resource usage. What you won't get is magic - Game Fire cannot help you if your graphics card is weak - but you may see some improvements.
Nothing Game Fire does is anything you couldn't do manually, but the advantage of this system is you only need choose what processes to stop once. Then you can stop and start them all at once, saving a lot of effort.
Game Fire can't perform miracles, but it may be enough to push your PC's performace just enough to play games more comfortably.