I've mentioned this game in a few other threads and it's on sale for 3.74 today. I paid the full $15 for it when it was released on both PC and PS3 and dont regret it one bit. It's extremely enjoyable and you cant go wrong for 3.74.
eta: it's a tower defense game meets diablo.
Edited, Dec 4th 2011 10:08am by KTurner