Thanks for the feedback! Much appreciated. And thanks for the tips on how to improve.
Yeah while I tried to "introduce" the orbs separately in the first / tutorial level, they do need a better introduction. Initially, I wanted to have a story element, describing the premise of the game, but had to cut it out.
Some elements are supposed to be a bit obstructed, but some are way too obfuscated. I am thinking of the ones inside the "finite time volumes", due to the sphere mask being too small for those areas.
Again, thanks for the feedback!