This game is AWESOME. Everything about it screams the essence of badassery itself, and the amonut of hours I have put into this game will probably horrify you. Let me explain.
I got the Xbox version of this game around 6-7 years ago. I've been consistently playing it that entire duration. I also own the PC version, but rarely play it unless I want to mess around with some mods. I will confidently say the Xbox version is the best version you can get, but then again, you should own the console anyway because it's da best. I'm losing track here.

Now, I never had Xbox Live, so I have no idea what the online mutiplayer is like. I wouldn't play it anyway, so this will be omitted from my review. There are 3 main singleplayer modes, Rise of the Empire (campaign), Galactic Conquest (thing), and Instant Action. I'm going to go ahead and say you're going to spend most of your time with the latter.

In Rise of the Empire, you play as a clone/stormtrooper in the 501st Legion, who happen to pick up all of the important battles from episodes 2-5, and everything inbetween. Most of the missions take place inbetween 3 and 4, and most of the effort and creativity was put here. The missions are all pretty fun, and I really can't think of one I like more than the others. There's the common criticism of the Battle of Endor not being in the game, despite it not making sense if you win the Battle of Hoth. I don't mind it that much. What I DO mind is there being no mission select. You could have saves before every level, though.

Galactic Conquest is a mode I really need to play more. It plays like a turn-based strategy, with intersected fighting. You can play as the Republic, CIS, Rebels, and Empire, which determines which planets you start off with. The player can build fleets, which hold troops. If you move a fleet to a planet that isn't yours, you'll initiate an assault. Win the battle, win the planet. You also get credits on a turn-basis, depending on how many planets are in your posession. You can use this to buy more fleets, bonuses, and different types of troops. It's an overall fun mode.

Instant Action is what I've wasted my life on. In this "mode", you can pick any map, any battle type: Conquest, 1 or 2 flag CTF, Hunt, and Assault. Every map will get Conquest and 1 of the two CTF modes, and possibly Hunt. Mos Eisely gets Assault and OH MY GOD I FORGOT space battles. They suck. You have Assault, which is the default mode for some reason, and one of two CTF types. I try to avoid them as much as possible, but the Campaign ones are ok. In 1 flag CTF, there is 1 flag in the middle and you have to bring it to the enemy's base to score a point. In 2 flag, the flag is in the enemy's base and you have to bring it back to your base. In Hunt, instead of the normal Republic/CIS or Rebels/Empire, you get to play as a planet's native race, be it Ewoks, Gungans, or even Wampas. *evil laughter* In Assault, you get to play as OH YEAH Heroes. If you do good in a battle, you can become a Hero, which are main characters from the Franchise. The amount of ass you kick as a hero character is indescribably awesome. Assault mode (non-space) is everyone playing as a hero character. About half my time playing this game, if not more, is this mode.*evil laughter*

So, is this game good? Yes. Is it worth the 40 possible dollars you might have to fork over for the Xbox version? I'd say so.

I give this game an 88/100.

Also, I should note that my rating scale works that 50 is a 100% average game, not a bad one, so 88 is a damn fine score to have, more so than by other publications.