I bought this game on a whim, played two levels, was semi-impressed and the next day was actually taking it back to get AC 3. I was sidetracked from taking it back and decided to play some more. GOOD GOSH MAN! This game is un-friken-believable!
I am now back into Halo and even want to check out multiplayer because of how fun the solo game is.
The fact that the game is also excellent in the multiplayer dept according to several articles and reviews that I have read is seriously impressive. Nitpicking and flaws aside, I believe that Halo 4 is one of the greatest games ever made.