My dream game is one that is based on strategy as opposed to controller "stick skills". I think this is because games like Call of Duty and Halo have perfected this genre. The thinking man's game market, though, seems to be much thinner. For this reason, I was excited about the release of a new X-Com game (judging by the reception, I'm not the only one who is happy about the game's release). This turn-based game may lack the speed of most modern day offerings, but it combines the depth of a game like The Sims with combat scenarios. As a result, it is hard to put down and incredibly addictive. Then again, this is coming from someone who used to spend hours trying out different trade scenarios ....
The main point here is that depth is what makes a game special and re-playable, which is something the creators of X-Com definitely took to heart.