Turn-based
Advance Wars Alpha Centauri Age of Wonders series Battle Isle series Chaos,Lords Of Chaos,Rebelstar series Civilization series Colonization Dominions2 Etherlords series Fire Emblem series Final Fantasy Tactics series [http://www.fallofromegame.com/ Fall of Rome] Galactic Civilizations Heroes of Might and Magic series Master of Orion series Silent Storm Space Empires series Stars! Superpower series VGA Planets (for play-by-email) WarLords series Worms series X-COM series

Real-time (RTS)
Age of Empires series Age of Mythology Black and White Blitzkrieg Colobot Command and Conquer series Commandos (game) series The Corporate Machine Dark Reign Dune series Empire Earth Europa Universalis series Ground Control series Myth series Populous series Railroad Tycoon Red Alert Simutrans StarCraft series Syndicate series Takeda Total Annihilation Transport Tycoon Warcraft'' series

Please note that this is an implausibly shortened listing, which merely listings a few popular series, & indeed leaves a select few of victims retired as well.