Deep Descent

Deep Descent is a cooperative underwater horror-survival game on Roblox by Polar Marine Exploration where players are forcibly drafted by a mysterious corporation to recover a lost research vessel while something deadly hunts them from the deep. Created September 2023, it has earned 35.3 million visits and 338K favorites with a 91.1% approval rating.

Players descend in a submarine that demands constant cooperative maintenance to stay functional. The crew must manage mechanical crises while hostile creatures attempt to breach the hull:

• 🗺️ Welding - seal broken windows and hull breaches to prevent flooding and creature entry
• 💼 Refueling - restore propulsion and lighting systems to keep the submarine mobile
• ⚔️ Barry - the primary threat: a humanoid creature with black skin, white spots, and glowing eyes who triggers Blackouts when breaching
• ⚔️ Drenched Phantom - secondary entity adding encounter variety; received a recent rework
• 💎 Blackout - Barry's electromagnetic roar disables most ship systems, forcing the crew into crisis mode
• 💰 Cash - earned from runs; spent on Hat Crates and Suit Crates for randomized diver cosmetics

Solo play is significantly harder - maintenance tasks require multiple simultaneous workers while creatures are active. Experienced crews assign roles before descending: welders, fuel runners, and defenders.

Deep Descent sits in the cooperative horror space alongside DOORS, distinguished by its submarine maintenance loop and team-failure mechanics where losing one crew member costs the group their contributions for the run.