The "Grand Theft Auto: San Andreas" Superman cheat isn't a cheat in the traditional sense but rather a modification one can download to change one's game-play experience. The modification is only available on PCs and requires the installation of several files to work.
Once downloaded and installed, the player can choose between a classic Superman look and the newer look from "Superman Returns." In the game, the player can use the modification to fly and explore the city. The modification also grants the player extremely fast running speeds and even super strength. Other powers granted by the modification include Superman's frost breath and heat vision.