Halo: Reach

I really love the campaign. Unlike most people, I never liked the dual-wielding in Halo 2 & 3, so I really didn't miss it here (or in ODST). Also, unlike most people, I had no problem with the absence of the Master Chief. Without him, I was given the opportunity to create and customize my own avatar for Noble team. I also got the opportunity to play a Halo game where I was on the losing side of a war. During the campaign, Noble team might win a few battles, but even they're aware that they're badly losing the war, and that they're basically just delaying the inevitable. Other great additions included Jet Packs, the DMR, and an improved Firefight mode.