What is the best PSN game for 10$?

What is the best PSN game for 10$ or less?

Outland.

Undead Nightmare, but thats DLC for Red Dead Redemption so I dont know if it can be played without the full game. Otherwise Dean Nation and Pixeljunk Shooter are the two best PSN games I own.

Outland would be my best bet; there's tons of amazing games though I literally own over 80 PSN titles

I like "Red Baron Arcade" a lot.