Metroid Prime...the FPS that just plain rules!
Metroid Prime's graphics were probably the best I've ever seen in any FPS (right next to Unreal Tournament's), because they looked so real! And I like the gameplay quite a lot, and I just love the music that plays at the title screen, and Metroid fans will think the enemies and bosses were done great! If there was ever a contest to see which Metroid game was the best, this would definitely be it!
I'm getting a headache just trying to think of something that's dislikable about this game. The only thing about this game that annoyed me so far are the awkward controls that can take beginners quite a while to get used to.
The Bottom Line
If you're new to first person shooters or want to reduce the risk of returning the game for a refund, I suggest you rent this and then buy it. But if you're a die-hard Metroid fan and are skilled at first person shooters, then rush to the nearest store and get it now!