Zombies for five bucks
Once upon a time, a game called Zombie Apocalypse was released on XBLA/PSN. Then once upon a time, its price was slashed in half for a week. Which is this week. As we speak, you can purchase Zombie Apocalypse for a mere 400 points or 5 bucks USD.
Back when it was released, I picked the game randomly, not really expecting too much and what I got was a bland, generic game. It's a top-down shooter where you kill zombies, picking up different weapons along the way. Doing the same thing for multiple levels was like clawing my eyes out.
Even for 400 Microsoft Points, I do not recommend this game. There are much better ways to spend your 5 dollars.