Play this game!
Ignore the haters. In terms of Campaign anyway, this game is one of the Call of Duty greats imo. Not only is the cast likable and semi-memorable; the game has a very unique feel compared to other CoD games. Space combat is handled very well, the ability to select your next mission out of order is excellent. The visuals still look fantastic!

This game came out at the wrong time, everyone was suffering from 'Future Fatigue'.
But if you are playing Campaign? Give this one a try! You wont regret it!