Does anyone know a turnbased/realtime strategy engine

[jiros]

I was just thinking of making an strategy game besides a mmorpg with 2 sides, something like the heroic and the darkside with paladins skeletons, different towers to make wich enables you to fire special arrows, building castles, a mix between age of empires 2 and Total annihilation: kingdoms.

btw i've already tried google and i was searching for like 4 hours and still can't find anything, it would be awesome if someone can help me out with anything that makes me closer to fullfil my quest to mu goal  :P