Sega Master System / Mark III / Game Gear
Until the real thing appeared, this was the only Operation Wolf-type game on the Sega. You play the eponymous muscle-bound 'Nam vet, on a mission to rescue your old pal Colonel Trautman from terrorist forces in Afghanistan. So plug in your light gun and get blasting at the soldiers who constantly pop up in front of you, and the tanks and helicopters which take pot shots from a distance.
Great graphics and bloody good (or good, bloody) gameplay make this one of the best Light Phaser games out. If you're a Light Phaser owner who is desperately seeking a brill Op Wolf pame then go for Rambo III, but if you're Phaser-less then go for the real McCoy.