I'm stuck at the three digit combo. I believe the answer has something to do with the numbers depicted in the paintings, but I really don't know.
Egress is a short piece of interactive fiction by Aleks Samoylov. It asks you to explore an imaginary space, test its boundaries, and, if you feel up to it, solve a puzzle or two. Egress functions as a sort of virtual puzzle box. If you twist it in just the right ways, it will reveal its secrets to you.
Hint: This game does have an ending.
Purchase of this product is an excellent way to support Aleks Samoylov as an artist, writer, game developer, and all around creative sort of person. If you're hankering to support them in the long term, you can also become a patron at patreon.com/feedthealeks.