Sorry to make this an "old-off" but I played Action Quake, a Quake II mod that was how you described your CS experience. An interesting feature on Action Quake that never made it to its modern counterparts was being able to jump into an enemy to perform a kick attack. It's also my first experience with friendly fire. I had a blast playing online with Action Quake. That was probably the time I realized mouse + keyboard was far superior to keyboard-only.