This game hold a unique place amongst the Star Wars games. There are no lightsabers, you don't have the force, you only have Delta Squad. The gunplay is fun, the gameplay is very interesting and challenging, and the AI is actually decent. In Republic Commando your squad of Commandos are not just fodder to absorb fire for you. They are good at killing, they can be deployed into a variety of tactical positions and be given a variety of orders, they get hurt, and they can be taken down. In the event you are taken down, they can actually help you up, which is pretty impressive. Another difference this game has from other Star Wars games is it's decidedly darker tone, as you aren't hanging out in the nicest of places. After all, you are a soldier and you are definitely in the ♥♥♥♥.
I cannot reccomend this game enough to fans of both Star Wars and FPS games.