I love the lighting that makes it feel like like I'm discovering things. I really liked how level 3 had a more complex design where the light hid little places to find the molecules. Playing was a little bit confusing, with having the game happen on a timer rather than having it be more linear as you completed the various phases, as I wasn't certain when I was ready to "move on" to the next phase. Maybe would be nice to have some background music that changed as you completed different phases of growth?