I used to play the Rainbow 6 series of games with some friends, including someone who was clumsy with grenades and would drop them at his feet, almost every single time. Somewhat of a slower game where you did have to be quiet in order to not be spotted, but quite rewarding among friends. The walking in that game was slow and deliberate, but the strafing allowed you to be a little faster as you were effectively cutting corners and I'd often circle-strafe my target to the point that he'd just be standing there trying to target me. Ahh, those were the days.