I just got a new game that I have fallen in love with, Advance Wars: Days of Ruin. This is an edgy re-make of the previous turn-based strategy Advance Wars: Dual Strike game. In this revision the story has a bit more depth, the cut-scene graphic design is updated, and the overall gameplay is updated to focus more on strategy than on an all out melee.
If you are unfamiliar with turn-based strategy games, you need to think of a war based strategy game where you need to plan your next turn by moving, attacking, building, or repairing tactical units of different strengths on the battle field. After you take your turn, your opponent (the computer) then moves all of their units to do the same. Think of a chess game where you can move all of your pieces once each turn.
One of the final innovations over the previous version is the fact that they have added WiFi gaming to the mix. Online play tied with the ability to create your own maps and terrain provide you with unlimited play options at all skill levels. Play your best friend across the street or strangers who live 5000 miles away (anonymously, of course).