""Adam Atomic tweeted an image of a few challenge sketches on a white board."
“Some vague, mysterious Canabalt ideas. What do you think?” the tweet asks."
Via - http://www.vg247.com/2012/03/22/cana...hallenge-mode/
Seems pretty cool. Canabalt always reminds me of Aladdin on the GameGear. Skip to 1:10 -