PAX10 2012 and IndieCade 2012 Selection Catch-22 by Mango Down has released on iTunes and Facebook. Players must jump to avoid their shadow while alternating clockwise or counterclockwise and collecting orbs to increase their score. Players lose if they bump into their shadow, unless they bump when switching. Timing the latter remains the most intense moment for me!

The core game seems the same on both Facebook (space to jump) and iOS (touch anywhere to jump). Since the developers don't have a donation set up on the official Catch-22 website, the next best thing would probably be to buy the universal app on iTunes for a mere $0.99.