Thanks for your comments!
The interactions you suggest are in the game, but I did not have the time to put the instructions in the game, only on the page :/
Like:
- putting rocks and fruits on your hat, which make spawn the same object in a bigger version.
- combining rock and wood to make tools.
- you can actually control 2 characters at the same time.
Here are the controls:
- Right click to control the camera
- Middle click to zoom in and out (this way you can switch between the 2 alive characters)
- Left click to interact (take objects, combine them when it's possible, use them on your character, use them on your hat)
- WASD for move
It was a bit ambitious and experimental for a solo dev, so I could not find enough time to present it well, sorry for that!