My personal winner of the Jam so far.
The game surpases the masses in both quality and quantity. It shines in both gameplay and visuals. The idea that you squeezed this out in under a week is mind boggeling. Even all the "unimportant" stuff, like having a desktop icon, and a nicely decorated page.
Do your days have more hours or somethin'?
And while I've played a bunch of solid gamers -especially platformers- with gimmicks similar to one of your rewind mechanics, none of them even attempted to have two.
I don't even know what I can criticize - perhaps it leaning a bit heavy on the Portal esthetic, maybe the difficulty curve? Beyond, I have only applause to offer.