Nice and unique concept that fits the limitation perfectly. I only wish there were a clearer distinction between the players and the lit walls, not only a small difference in the light radius.

It's amazing you got all that done with only vanilla JS without even a text editor capable of syntax highlighting, by the way! If you didn't limit yourself like this, who knows how much more you could make.

Interesting concept, but too abstract and vague to play. Might be needed to be presented more clearly perhaps?

Nonetheless cool game with decent music and visuals.

I like the soundtrack. The visuals are spare, but they work for this type of extremely abstract game.

I appreciate the originality of the concept.

That said, even with the additional explanation, I had a hard time figuring out how to win. This is very hard. :)

I agree with the below, interesting concept but im not sure i understood the controls/mechanic.

An interesting concept, not sure I understand the controls/mechanics! I really liked the music. Nice work!

Fun game! a nice challenge trying to move the balls around the screen. A simple but fun game!