You captured the whole stranded in space facing impending doom scenario perfectly. The stress levels start to go through the roof as the distance from the black hole goes down and down. As you vainly try to crack the password over and over again as your oxygen seems to run out quicker and quicker. Not to mention the more and more frequent continuous valve turns and annoying phone calls lol that's a lot of stuff to juggle.
Good job on the game i didn't escape the black hole the several times i tried but appreciated the game experience none the less.