Sony has marked down a handful of titles on the PlayStation Store this week for a limited time. There's a few co-op games to speak of - namely FLOCK! and Pixel Junk Eden.
Here's the full list:
WipEout HD (was $19.99, now $14.99!) Flock! (was $14.99, now $7.49!) Savage Moon (was $9.99, now $4.99!) Crash Commando (was $9.99, $4.99!) PixelJunk Eden (was $9.99, now $4.99!) Brain Challenge (was $9.99, now $4.99!) 3 on 3 NHL Arcade (was $9.99, now $4.99!)I recommend checking out WipEout HD. It's a beautiful title on the system and a ton of fun.