I don't have much time to play video games, so I tend to go many months between games, looking for just the right one.
I've been playing XCOM: Enemy Unknown for about a week now, and so far I like it quite a lot. It isn't the best game of all time, but it's a lot of fun, and the pacing is very nice.
I like the fact that, for the most part, it's turn-based, so it generally doesn't test my reflexes and controller-agility, but rather keeps me entertained with puzzles, plot, and action.
XCOM: Enemy Unknown is a bit of an unusual blend of base-building and tactical combat, with some switching back and forth that is managed quite well. Overall, I think that the Ars Technica review nails it: Review: XCOM: Enemy Unknown is a credit to the name: Firaxis' update keeps the drama and difficulty while adding accessibility.
Firaxis has taken the decision-making process that made the original so addictive and expanded on it, creating a play experience that's much more detailed than the original’s endless bug hunts. Limited cash flow can force choices between research in weapons you can’t afford to produce and research in life-saving armor you don’t have the supplies to build. You will need to go to desperate lengths to capture live aliens, take ludicrous risks to prevent civilian casualties, and charge into the teeth of withering gunfire to defuse deadly bombs. The developers obviously cared enough about the X-Com lineage to put their own mark on it, and their concern shows in every aspect of the game.
It's still a bit early to see how I will fare with this game, so check back around Thanksgiving and I'll let you know :)