What is a game fps

FPS is a meaning of 2. First-person shooter or Frames Per Second.
First-person shooter is the type of game. The games Call of duty, Battlefield, Halo and many more shooting games.

Frames per second is what frame rate the game will run at. If you are a PC gamer, this option can be changed, the option you have is either 30-60fsp. 60 is the best frame rate, therefore will run faster and better. Most games on the console will run at 30 fps.