Penny Arcade 1 and 2 suck ass, but 3 and 4 are made by the people who made Breath of Death 7 and Cthulu Saves the World with completely different gameplay.

Don't pay $6 for it though as you can get 3 and 4 bundled together right now for $4 through Steam.

http://www.youtube.com/watch?v=zwQN7Hoy7mA

http://www.youtube.com/watch?v=rI3QDMWEk_U