I agree with you, the game works really well without text but instead with visual and sound cues. I think that the visual cues could be improved in terms of the connection between one line to the next. When the lines had a circle with a diagonal line across, I would think that that would mean the light would go in the line and then propagate into the diagonal line and go to the next one. But that wasn't the case. I think having clear distinctions in where the line of light will continue, maybe directly bending the line without having the circle, could get rid of any ambiguities. For example, I had no idea what would happen when the light reached a circle with a circle inside of it. Does it stop? does it propagate forwards? And sometimes picking the light back up would make it go forwards more, which wouldn't make sense to me since the light was not there anymore since I picked it up... With the time of the game jam, i'm sure that it is obviously very difficult to play test all these things and get it right, so I would suggest: keep iterating, keep play testing, you guys will get it right!