MMMhhh... the idea is good but:
I can count the pixels with my 2 hands XD
That's, even for oldskool games, to less pixels.
I remember the Commodore 64 had more pixels on screen at one time.
Some things i also found:
? The holes are bottomless and you have to refresh the browser
? The door does not open (I guess the demo is just that short :)
The idea with the freezing is great and gives a reason to hurry. This could become a good game.