"Come February 5th, Xbox 360 Gold members (February 12th for Silver members) will have weeks of advanced playtime with Halo Wars thanks to Ensemble Studios and the Halo Wars demo.
You're given a rather large taste of the game, including a variety of game modes accompanied with basic and advanced tutorials. Speaking of the obvious, RTS (real-time strategy) games are not to be taken lightly, and Halo Wars is no exception. I highly recommend against skipping the tutorials and going in blind. While the demo never fully challenges, it gives a solid taste of how quickly the game can become insanely difficult."