Looks great. Having some issues, though.
I went to the first new location (City?), the canal with roads on either side, went in the tunnel, backed out of the tunnel and was back in the starting location (where you use the glass on the shapes).
Went and explored the City area again.
I turned the flashing option off at that point. Explored some more and went back to the city and was stuck there. I couldn't navigate anywhere or interact with anything but did get descriptions on mouse over. Restarting and resetting didn't help...still stuck in the city.
I reinstalled and I was still in the City with the same issues. Uninstalled and installed the new version and I'm no longer in the city and everything is working properly.
And managed to use the metal ball/chain on the wall and I'm back in the tunnel which I don't understand, although it does make sense that when I was in the city and went into the tunnel, navigating out of the tunnel put me back in the first location.
There's no music and only a few sound effects, that might not be a bug, though.
One design/QoL issue I would maybe consider would be giving access to the camera a little earlier. I cannot find a way to play in windowed mode and having to remember the squares/triangle pattern was a little frustrating. It would have been less so if I could have had the camera screen caps.
And game crashed on minimize... out of memory on 16 GB of ram.