Pretty fun! Though I feel like the area with the first key is a bit too hard because of it being so random, the original world's hardest game if i remember correctly had all of the obstacles on paths that didn't change, with that area you just need to get lucky. But everything else  is really good!

Positive Feedback:

Art Design: Very clean, simple, and cool — well done visually.

Mechanics: Solid and functional, well thought-out.

Concept: The box gimmick is clever and interesting.

Overall Impression: A very good game; impressive work with clear thought put into design.

Areas for Improvement:

Character Animation: Would benefit from some animation to enhance visual feedback.

Difficulty Curve: Obstacles come very fast and often; game feels quite difficult, especially for older or casual players.

Mouse Movement: The mouse (or player character) moves too slowly when pushing the box — could use a slight speed boost for better flow.

Additional Notes:

Recognizes the time crunch of a game jam — understands why some elements may be limited.

I'm curious about the game engine used and your level of experience — the game feels professionally structured.

All in all, great work with the game!