Halo 3 (Xbox 360) - Great (no manual)

Okay, personal story time; this game defined my (Mathias') teenage years. I probably played this for 500 hours, weekend after weekend, and it was just the best time of my life (until I met Amalie). It's still just as good, but probably only if you played it back then - shooters have evolved a lot since this game - but if you never played it before, at least make sure to give it a chance once in your life. You won't regret it!