Tin Can

This two-by-two-meter space capsule has everything: a small nuclear reactor on top of the capsule, an artificial gravity generator at the bottom, a single seat with belts, a hatch, a life support system (an oxygen production station, a carbon dioxide collection station, a pressure station), a main computer that displays error information on the screen, and several boxes with supplies and spare parts. On the wall are measuring instruments that don't consume reactor power; they measure pressure, air humidity, radiation, reactor energy production, and more.

You can die from anything: from depressurization, from low or high pressure, from oxygen starvation, from radiation (fortunately, there is a protective code on the nuclear reactor that can be removed and it is always there in every run).
After the run ends with the player's death, they encourage him with a phrase like, "This is just the beginning, there's still a chance." and TD