Halo doesn't have anything very innovative about it, but everything it does is PERFECT. The vehicles are very easy to drive, and very balnced in power, except for maybe the Scorpion tank. The targeting system is very easy to use. The shields are very nice if you have barely any health. The multiplayer maps are some of the best ever. The weapons are very balanced except, of course, the rocket launcher. Halo has the very best of every FPS mixed together with an amazing story and awesome graphics. The bottom line is if you have an Xbox, you need Halo, even if you aren't 17.