I really love RTS style games. Some city builders, some MOBA's, but mostly a good 'ol RTS.
Also WW2 based RTS's tend to be my favorites.
Along with Germany. I will love any German faction in an RTS no matter how bad they are, and if it's a realistic WW2 RTS (Men of War, etc) then I will love the shit out of that superior early war tech.