Halo 2 was never really underrated, as many other people already said, almost everyone I knew said it was a great game, and I agree. I rate it equal to Halo 3 in my opinion (which is a 9.5/10). I know you said not to get into ODST, but it is a good game. Even being on the Halo 3 engine (from what I was told) the game looks almost as good as Reach due to the amazing lighting. Reach is the best game in the series in my opinion, regardless of people complaining about armor abilities, and the first game I beat solo on Heroic due to there being no flood. Sorry about not contributing much to the Halo 2 being underrated discussion, but I wanted to voice my opinion about ODST and Reach and didn't want to start a new thread just for it.