Never heard of a lumen before
This game is pretty good because it has a really good technological feeling to it. The only thing wrong with it is that it is not well detailed. Besides that, it's hard to find anything wrong with it. The strongest point is probably that it does not try to be really elaborate and is just a simple maze game. It's really cool how small the white dot is. It sure makes it easier to avoid the edges. I wasn't even sure if they were dangerous at first, but I knew I would find out soon enough, which I did.
The music was decent and it gave off a pretty simple feeling. That contrasted well with the more technological background. I especially like the menu screen and all the electric looking elements that were around. I suggest you should probably put in a more interesting maze like more detail in the structure. It does not look that detailed as just a white line, you should use the neon lights you use for the menu.