Yeh Thats the best part of the whole 0ad project Anyway, if you want to BUY the AoK (AoE) angine, you will have to use a lot of money i guess, think about it ... Anyway, check here: http://www.stainlesssteelstudios.com/ they are selling the engine, and its WAY better than the AoK... Or was it a 2D only game? Hmm, you might do something with engines that has been given out, what about making an RTS with the Quake engine ? Anyway, you should try a lot of things before you purchase the AoK engine, because i think its pretty expensive