Dwarf Fortress is a single-player fantasy simulator. You can control a dwarven outpost or an adventurer in a randomly generated, persistent world.
Total war is a turn based/ RTS strategy game, you play in different historical battles.
Free online strategy game.
A multiplayer browser game with players from all over the world, as the game is country based and every citizen of that eWorld is member of a country.
Ultimate Epic Battle Simulator is a sandbox for creating massive battles without limits. Designs battles the way you want, with what you want and where you want.