I suppose if it has to be of all time, I'll have to be generic and go with Final Fantasy Tactics: War of the Lions. It was nice being able to actually understand the story the second time around. A close second is Fire Emblem: The Sacred Stones, which was great fun to play. Also the recent Banner Saga: Factions is a pretty great game, though it's lacking a few options (on purpose, supposedly) and is basically just a demo for the single player, I still like it a lot. Oh man! Advance Wars! I enjoyed that a lot too. Now that I think of it Phantom Brave was pretty decent as well. Also, how can people say this Ecol Tactics was their favorite game? Is this a sequel to some single player game I've never heard of? Or are people just being stupid?