AppImage worked here as well.
Dark, desolate, no orientation. Great atmosphere. Perhaps the sound of your heartbeat could improve? Is there actually an exit? I never found it. Fun while it lasted, great graphics!
As I was nearing the end of this project, I realized that in all the games I've made thus far, I've never played much with sound! I plan to implement footfalls and atmospheric sounds to build on the established atmosphere more. There is an exit, it's not marked at all, but if you get to a room with a different texture along the entire southern wall, that's the exit! Thanks for playing!