injected or whatever with kryptonite. gives limits on power, for use or time use, get ''tired'' by using those. get better by doing ''game mechanics''..Superman is too powerful for a video game, he can level an entire city in seconds and is almost invincible. How do you make a game qith a charecter like that?
it is not as hard as it sounds, way harder to make it interesting, make world, enemies and etc..