Advance Wars series.

[Gurlugon]

Mr. Mockery himself! Responding to my first post! Joy!

Well, hmm... Let's see. It's turn based. You capture cities, bases, airports, etc. You build. You move. It's best compared to chess. Each commanding officer has special attributes (cheap troops, longer range on missile/artillery-type units). It's very addictive. There's a Campaign mode for your story-centric gameplay (you unlock new commanding officers by meeting certain criteria); a War Room for playing the AI for credits (buy COs and new maps to play on); and Multiplayer modes.

AW2 is more of the same. There's one new unit, but a whole lot more COs. Fun, fun, fun.