Room of barely 6 meters and game controller to steer: that’s how oppressive it is inside a missing submarine
The biggest challenge for those on board the submarine that disappeared during an expedition to the wreck of the Titanic is not to panic, otherwise their oxygen will run out faster. Easier said than done perhaps, because the five may be at a great depth in a narrow tube of six meters long, which is controlled with a converted game controller. They cannot get out themselves, because the submarine is closed from the outside with thick bolts.