Hello! Please post your game ideas and feature requests here.
A simple feature you could add to increase gameplay value is a "bluff" feature. It feels a little punishing to die as soon as you enter a wrong room. if you wanted to add more depth to the gameplay, you could allow the player to wander off in the wrong direction... at least for a little while. Then, when they realize they've been going the wrong direction for too long, ... they run out of oxygen on their way back to the ship!
It feels very satisfying to see your textmode art in a game. Seeing your original concept art was euphoric, and having it made into a game is all the better.
The player will not always die when they enter a wrong room, and there is a way to tell if it is a safe room, if you inspect closely. Perhaps some in-game hints would help people to explore this.
I'm glad you enjoy the art! I've got some unreleased features I'd like to add when I find the time which have more unique artwork.