The game is actually a fixed five minutes in length. You can wander around the environment and interact with several parts of it. Doing so multiple times will usually yield different results as the player character gets more and more stressed. The design as intended was for the doctor to return at the end of that five minutes to deliver the news to you, but some known bugs that we weren't able to iron out in time prevents that from happening, unfortunately. A pretty big patch will be coming once voting ends if you still feel like trying it out at that point!
Also the painting is "Storm-Tossed Frigate" by Thomas Chambers, 1808!