Clever mechanics, however it's a little broken. I assume stopping time was supposed to mean stopping the boxes from moving, but sometimes there are still moving boxes even though the time is stopped.
Also, sadly it doesn't really fit the restrictions, since it's not 84x48 pixels. The player's jump, and the boxes absolutely ignore the fact that it's supposed to be 84x48 and are nearly always between pixels. Something, that shouldn't happen.
The jump felt really floaty, and I spent a noticeable amount of time just waiting for the player to fall.
The puzzles were nice, however many could be completed without using the main mechanic - stopping the time.
Overall, nice job! :)
