You all saying the campaign was 5 hours all make me want to facepalm. You must all be playing on low difficulties, and rushing through it, I played stealth did all objectives and started on on veteran, racked up 9 hours of campaign gameplay in 1 run. The 2 missions "Red star rising" and "one last mission" both take a bit longer than an hour to complete if you kill everyone, explore, and do every objective on a high difficulty, only problem i have is that the highest difficulty is too easy, it's i'd say on-par with Halo's heroic difficulty. Yes, crysis 2 is longer, but the story is significantly worse and more linear, so it's a good trade-off-. I currently have 22 hours of campaign playtime and 94% complete. I think the campaign has a high replay value but lacks incentive to go back and do it again as the collectibles aren't all that interesting and i cannot seem to find what attachment i'm missing.