Batheo is a browser based real time strategy game (RTS), set in the realm of ancient Greece. Like in many games of the same genre, you have to build and manage your city.
Batheo focuses a lot on the battles, giving you the opportunity to manage all the details of the combat, and emerge a glorious winner. All the online features you would expect are here, like PvP, clans, and leagues.
Finally, although it is a mmo game, a single player campaign is also available.