Well for me it went like this. Halo CE (PC) It was a very fun game and had a great campaign, after all it was the first impression and the universe got me caught in, as such I keep playing Halo up to this day and multiplayer was awezome I still play Halo CE custom edition up to this date just for the multiplayer. Halo 2: A good continuation of the original story, I really enjoyed it and the addition of Matchmaking was great, however it did have its flaws, as it has allready been mentioned there were lots of button glitchers (BXR comes to mind) and modders and basically to get to the highes tlevels you had to be a modder, but when you had a game without modders the multiplayer was quite enjoyable, the maps were good and the game was fast paced. Halo 3: The story was decent, campaign wise it was a bit short, Multiplayer was great and the additions of forge and theater were quite nice. The multiplayer seemed a bit slower than H2 but it was still good. Halo Reach: The campaign was decent but not as epic as the previosu 3 games, sure graphics were bette rand all but thats about it, Multiplayer wise it was dcent but way slower than the previous Halo games, the addition of AA's was also a terrible idea but in the end I still enjoyed and enjoy Reach. Halo 4: WTF happened here? the campaign seemed rushed as if 343i anted to stuff so much into the short campaign that many thigns were left unexplained and you had to watch the terminals videos to a tleast get a graps of what was going on (It didnt help that the terminals arent viewable IN GAME) the gameplay is just ugh.. it doesnt feel like Halo it feels more like a CoD / Crysis 2 hybrid. Theater sucks now, you cant have a list of replays in queue so if you did somethign cool and want to save it you need to leave matchmaking save the video and start anotehr game or its lost, also no theatre for Spartan Ops and Campaign. Server issues constantly and lag, also blackscreens are worse than in previosu Halos. Another thing I liked about Halo was that everyone started on even ground, you had to FIGHT for power weapons and control the map, nwo yu can just sit back picking off shots and then have a power weapon delivered to you wich IMO is a bad idea (Thus why I prefe rplaying Slayer Pro) still H4 multiplayer has failed to keep me interested in the game. Sorry it is not nostalgia but Halo 4 is just... meh /Opinion