I didn't think the first one was too bad. Compared to other crappy STWs games that have come out, this one at least had a pretty cool take on the interim between ROTS and SW: EP1.
Game play isn't hard or complicated at all but can be frustrating at times and repetitive.
And, as far at the physics in the actual graphics driver, they were pretty good. BUT...if they should have made more of the environment interactive.
Alternate ending was both kind of cool and dumb, to be honest.
My biggest complaint is, even though the overall story was a cool take on the SW mythos, the fact that the force is "unleashed" in this game and, consequently, totally bad ass, craps all over the Force of the original three movies (episodes 1-3) as the Force that the characters in those films uses looks absolutely infantile in comparison.
Overall, I give the first game a 6 or 7 out of 10.