Strategy you say?
then CnC Generals:Zero Hour - not only are there tons of mods (adding to the hours of gameplay) there's a super-active community. Still one of the best strategy gameplay games ever - the latest mod me and my buddies loaded (Contra 005) - the AI does stuff we've never seen an AI do; we *actually* legitimately lose even when we're trying DAMN hard not to!
Playing on th ePC side is fun (but a pain if you're bootcamping) - I know some folks crossoevr or w/e, but for me, that presents more hassle than it's worth - i just wanna play! not mess w/this driver, that port - feh! rebooting is WAY easier - while I can't play *all* PC games on High settings, most play fairly well (altho i shoudl say I don't play many graphically intense RPGs or FPS's) - on the PC side, Sins of a Solar Empire is pretty neat of you like epic strategy games.
I find most games are rather boring and easy to play - Zero Hour can be very challenging, esp. when playing against fellow humans. And the mods don't seem to be slowing down either, for such and 'older' game.