Interest in the submarine horror game "Iron Lung," developed by David Szymanski, has increased amid the search for the missing Titanic sub.

The premise of "Iron Lung," which Szymanski told Insider was "the most potent submarine-focused nightmare" that he could imagine, is much more fantastical than what's happening to the Titan sub in real life. But to know that it could be rendered when "lots of money mixes with lots of bad decisions" is something that Szymanski said he finds both "surreal and frightening."