Had the potential to be great, but turned out less than enjoyable.
The biggest problem with this game is that the gameplay simply isnt very fun. There's no manual aiming at all- when some enemies appear, you automatically lock on and basically just have to hammer B. The game tries to add some variety to combat by having Zeeo (your droid buddy) help you do some attacks, but it really doesn't add much. The platforming element is very basic as well- you can't even jump, and most of the time you'll just be sliding across railings using Zeeo. It's OK, but incredibly repetitive after a while.
It's clear that this game was rushed as I found a huge number of glitches whilst playing. I fell through walls to my death, the music sometimes disappeared after continuing from game over, some of the minigames randomly 'broke' (don't ask) and on the final boss, after dying a couple of times, I couldn't pick up any ammo! I could just walk through the ammo instead of collecting it, and could only fix it by resetting the system. Its not good...
Graphically the game looks good at times, but mostly just up to early PS1 standards, so it could definitely be better. The Star Wars soundtrack is in as expected, but its horribly compressed and gets very repetitive- for example the same fanfare is played after killing every group of enemies.
There are some touch screen minigames that break up the action, and these are actually fairly good, it's just that you'll grow to hate them after playing each one about 20 times (which you will do over the course of the game) The instructions for each one are very brief as well, and I'd bet lots of people will be frustrated just trying to work out what you need to do in these parts.
You might have heard that there are some FPS parts to the game. Well, the FPS bits are... awful. Theres basically no fighting involved in them, you spend pretty much the whole time exploring air vents, shooting metal grates. Which begs the question... why did they need to be FPS anyway? Yeah, I know... theres a FPS multiplayer mode, which admittedly I havent tried out, but I wouldn't imagine it'd be very good.
Overall, if your a Star Wars fan and don't mind sub-par gameplay then you may find some redeeming qualities in this game, its a decent length and the story is occasionally mildly interesting- but I wouldn't recommend it.