The mechanics felt good and easy to control, the box spawning wasn't a bother at all, and felt good.
The art is pretty sparse, and the fire kinda looks out of place, but the simplicity works well for the game.
The tutorial is good, and I like how it's set up to be necessary if you don't know the game, but easily avoided if you do.
Could definitely do with more gimmicks in the future, as right now there's only really the fire and simply spawning the box, so puzzle options will be limited past a couple levels.
I liked it!