I remember playing a PC game a few years back, that came from a PC Format DVD. I think it was called chrome, and it was a FPS (First Person Shooter) with a (bit of a) difference. You could become semi-invisible, or almost invincible for short bursts of time. As with many games in this genre, playing with the keyboard was not the best of experiences, so looking for chrome accessories such as a joypad or joystick would have helped.