Known in parts of Europe as Operation Neptune, and in France as Bob Morane: Ocean, the 1988 North American release of Project Neptune has you in the role of special agent Robert “Rip” Steel, tasked with neutralizing the undersea operations of the sinister Yellow Shadow. Commanding a nimble submarine, you must navigate treacherous ocean depths, destroy enemy mining installations, and safeguard your own network of bases in a tense blend of strategy, action, and resource management. Part simulation, part action game, Project Neptune features a detailed first-person submarine bridge where you manage systems, deploy charges and torpedoes, or exit in a wetsuit or mini-sub for direct sabotage. Players switch between cockpit control and map-based planning to outwit the AI enemy while juggling limited oxygen and ammo. Though never officially released for some platforms due to Epyx’s collapse, the game showcases cinematic ambition and impressive visuals, hinting at the Infogrames pedigree behind its design. Despite some unfinished elements, it remains a fascinating and atmospheric relic of late ’80s experimental game design.

Originally released as Operation Neptune by Infogrames, the rights to this undersea adventure remain with them and are now part of the Atari Group.  According to the Atari website, inquiries about the classic Infogrames portfolio can be sent to contact@infogrames.com — either by harpoon, sonar ping, or very polite email.

Also, let’s take a moment to appreciate that the main character’s name is Robert “Rip” Steel. We’re not saying it’s the manliest name in gaming history, but if Esquire ever publishes The 12 Most Testosterone-Infused Names of All Time, Rip Steel is clearing the top five with a high score and no continues. Honestly, it’s a missed opportunity that Hollywood hasn’t optioned this for a summer blockbuster or at least a protein shake brand.