Very interesting prototype for your game, I like the concept but there are a lot of things that need some work.

The core mechanics of the game are pretty simple to understand, you pick up and drag and rotate objects to help you overcome obstacles. However, there are some things that are a bit unclear such as the amount of mana consumed for each object or interactable objects. I didn't expect the metal bridge to be interactable and the dirt blocks to be uninteractable.

Bugs:
- Scroll Wheel - The scroll wheel scrolls the page as well. This is an issue since the scroll wheel is used for a mechanic in the game.

- Performance Issues - I seem to be getting performance issues, but I can't yet confirm whether it was an issue on my end or if was caused by the game. It went to the point where my browser almost crashed.

Suggestions:
- Camera - since this game relies on picking up objects with the mouse, I think it makes more sense for the camera to follow the mouse instead of the character (while keeping the character in frame of course, so the cursor doesn't wander too far off).

- Mana Consumption - I think using for mana for bigger objects and less for smaller objects would be a neat mechanic to add in this game.

- Interactable Objects - I think interactable objects can be more distinct. Like how some games have yellow markers to indicate where to go (like in god of war or the last of us), this game can also make use of markers, colours, or outlines to indicate what the player can or cannot interact with.

- Level Design - There are some parts of this game where the player can easily trap themselves, or lose all interactable objects rendering them stuck in that portion of the game. Improving the design of the layout of the platforms and objects can help mitigate those issues in the future.