What a creative game mechanic! The way the physics were changed and controlled by the player worked really well, and it made for some interesting puzzles! I especially liked how it was used with different objects, like the trays and the fish - it made for some good variety. The game controlled pretty well too, which is always a positive, though I would say it was a little slow. Maybe it was because we were in a freezer, but it still took away from the game a little bit. Pushing around the ice was sort of difficult to do as well, and it's a small thing, but I would've enjoyed a way to quickly restart as well, like pressing R.
The art was very good, with the character looking well designed, and the background environment looking just like a freezer. I really loved those plastic food boxes as platforms! The overlay effect for freezing was a good touch, and it made the current temperature easier to see and understand. The music was nice and ambient, but sound effects could've added some more to the game, I think. It still works well without them, though!
This game had a great concept, fun levels, and felt like it had a lot of work put into it, so very well done on making it!