I saw the white light... am I there?
This is a really interesting game. Very unique. It's quite unclear at first...but it's satisfying to figure it out based on the sounds and the colours. And actually.. in hindsight, it's minimalism makes it a bit more clear than quite a few other games which offer so many options but don't explain them well. This game just throws you into the mix and says "figure it out".
I'm not sure if the white light was the end though? I'd say that's one downside to the vagueness of the design. It forces the player to figure it out which is cool but it gives the player nothing which means less certain people will probably give up.