It's mainly because I was deeply entranced by the C&C Franchise since Westwood Studios made it, too bad what happened to them. Damn it, EA Studios for ruining the C&C Franchise with the biggest abomination of an RTS called C&C 4: Tiberian Twilight and cancelling C&C Generals 2/C&C Online. It looks like EA is too far gone in releasing Sports games, the Sims and etc...

I'll give an slight honorable bow to Warcraft, Starcraft, Rise of Nations, Empire Earth, Age of Empires and some others forgotten about those other ones should've made this an Top 100 or something instead of a Top 5.

Besides that what's your favorite Turned Based Strategy games? I have a few akin to a lot.

Sword of the Stars I/II, Sid Meier's Civilization Series, Sid Meier's Alpha Centauri; the X-COM Series including the Re-Imagining X-COM Enemy Unknown/Enemy Within games that was released awhile ago. Galactic Civilizations as a whole; even though I am waiting on Galactic Civilizations 3 to be cheaper on Steam; and Endless Space.

Even though Sword of the Stars 2's launch was horrible, I still like it.