I'm a bit of a Halo fan. I have played an immeasurable amount of Halo: Combat Evolved, probably an embarrassing amount. The subsequent games' campaigns haven't enticed me the same but I'm happy to say Halo 4 is cruising very close to that original formula.
Giving a game a 10 is not something I took lightly. Halo 4 is not a perfect game but no game really is. It is a game that is greater than the sum of its parts however. Any minor gripe I had with it was outweighed by something that much better. Also taken into account was the great package this game ships with — Spartan Ops, Forge and an extensive multiplayer. Even though Halo 4 is the first 10/10 I've given this year, it's the first 10/10 I've ever given. That doesn't mean it is a lock for my favorite game of the year however, the race is still on.