XCOM: Enemy Unknown
Right now, id give it a solid 9/10 for what it offers. It's a bit hard for my tastes, so I've been finding myself restarting missions. This wouldn't be a problem in most games, but it makes me feel like I'm cheating. I also feel like every hard administrative decision I make is going to royaly **** me over in the long run. This game really keeps you on your toes, but if you love base management and turn based strategy you should look no further.