This is a really great concept! my favorite one so far... I suggest you put your controls in the description or in the settings because it was slightly hard to figure out. I think space to go up and shift to go down would be more intuitive. Also, left click to pick up. it is unlikely that the player would think right click would pick up an object. I was pressing all my buttons trying to pick up something lol hahhahah. Moreover, the player movement was a bit too fast. I suggest to make it slower and smooth or make the player control the speed for example holding the control button to make the player move slower.
Overall, really great gameplay and concept!!