Rogue Legacy is the works of Cellar Door Games and is an addictive action platformer that begs to be played over and over. The twist here is that when your character is killed by beast, ghost or trap then a new hero is born to carry on the fight. Rather than be a carbon copy of the previous hero, new challengers have their own game changing quirks. Take a look at the Rogue Legacy gameplay videos for a better idea.
http://youtu.be/ZgsL8PPPXh4
http://youtu.be/7NWdLQs8IJY