Did you guess Descent for yesterday's ScribbleTaku? Puppylicks did, and within five minutes no less. I specifically took the crosshairs from Descent 2, although they're weapon dependent and you can find equivalents in all three of the games. There's probably something similar in Overload too, the game some of the original Descent devs are working on.
Anyway, new game time. Let's see if this triggers any memories for you.