Halo Wars is a brave attempt at bringing RTS to the Xbox 360... and in my book, it actually works really well. Sure, it mainly revolves around tank rushes, but the controls are decent and the gameplay is as slick and visceral as you'd expect from any Halo title. Watching a team of Spartans smash their way into enemy vehicles and steal them for the cause is a particular highlight. The story is also excellent, with plenty of ridiculously shiny cutscenes to reward your progress. It's not deep and it's not clever- but since I prefer twitch shooters to deep strategy, I felt right at home.
I know that Halo Wars is extremely divisive- and this is just my personal opinion. Let us know what you made of it in the comments!