One of the best games at the time.
Graphics: The graphics at the time were absolutely astounding and with a decent PC you can make it look even better than it did originally.
Sound: Good music, voice acting, and nice gunshots.
Value: A decent length campaign and a few more maps for online multiplayer help keep the action going. Tilt: It is a great game that will keep you playing it for hours on end.
PS: DL the Halo Custom Edition mod. Then DL the Custom Map Team's Singleplayer campaign. It is available on filefront.com. You can use Halo2 weapons with silencers and GLs.