Blasting my way through the first level of Zero Tolerance, one of the few first-person shooters on the Sega Genesis.

Though hampered by a small view area, short render distance, and choppy frame rate, Zero Tolerance still manages to be an addictive and respectable FPS.  What impresses me the most is how many features it packs even despite its age and the Genesis's limited hardware.  There's an inventory system, for example, as well a whole host of playable characters with unique skillsets and starting gear.