Thank you for your comment :-) I will make a full version :-)
I'll look into the issue with it being too dark. Of course it's part of the theme for the early levels to be dark as this is a tragic displacement event. However I do want it to be playable. I found it to be ok for me, but I guess that could be my set up or simply my familiarity with it.
I'm certainly going to look into fixing that :-)