Hi Pouyan Shekari-Kiani,
We decided to keep the light always on because we have a "cone of visibility" that spawns all the props and it would look weird without the light, pressing Q makes the cone of light bigger to reach further away and it drains energy overtime, but we couldn't update the game instructions in time.
Thanks for the feedback about the lights, we absolutely need to change colliders!!
If you want you can try the game again with a lot of bugfixes :)