Oxygen

Oxygen is a 3D action-adventure game developed by Checkmark Studios released in early February 2015. The game is rated E10+.

Plot
The game follows the story of Ignotus, a person who signed up for a space mission. The rocket Ignotus was in glitched due to something hijacking into it's systems. The rocket crashlands on a metallic looking place in space that seems to be decaying. Ignotus must find an alternative way to escape, as there is no hope repairing the rocket. Ignotus finds out they are losing oxygen, and picks up a suit of armor with an oxygen tank strapped to the back. However, there is a problem with the tank which causes Ignotus to slowly lose oxygen. Ignotus can refill the tank by inserting oxygen refills that were scattered around the place (due to the rocket crashlanding) into a small hole in the tank. If Ignotus runs out of oxygen, they obviously die.

Trivia

 * There is a chance Ignotus can overload the tank with too much oxygen refills. If this happens, the tank will explode and injure Ignotus. Ignotus becomes immobile due to the injury, and will eventually die and get a game over screen.