So I have always loved Diablo style games and Tower Defense style games but having not played DOTA (defense of the ancients, an old warcraft mod) in forever I forgot how cool they are together.
In short the game is completely FREE and you can choose from about 8 different heroes, each of which is fairly unique. Buying stuff (with cash) seems overpriced but it is easy enough to earn new characters just by playing the game.
Currently the game only has two maps but the community seems cool (I have not been called anything yet) and the game itself is really attractive (medium range but stylized graphics).
http://signup.leagueoflegends.com/?ref=4ce9a60e147f7357346697
Btw if you set up a free account through that link I get a little bonus in points to unlock heroes. I'm usually not the spammer type (as you all know) but given that it is a free game I would appreciate you dudes checking it out.