Desktop
About The Ninth Fathom
A colossal eel erupts from the dark in a comet of white light. Dash through it, turn, and drive your harpoon into its jaws. The Ninth Fathom is a painted side-on action game: dive through twenty-five bioluminescent areas, from the flooded Airlock Shallows to the Idol Sanctum, and bring down the seven titans that rule them. You swim left and right only; so does everything that hunts you, so every fight comes down to timing.
- Seven huge bosses: the Warden, the Lantern Queen, the Tide-Lord, the Carapace Tyrant, the Hollow Eel, the Veil Empress and the Drowned God. Read the tell, dash through the strike, punish the opening. The Tide-Lord and the Carapace Tyrant heal fully into a furious fourth phase.
- Five harpoons: start with the Brass Harpoon, then find the rapid Needle Driver, chain-lightning Stormcaller, line-piercing Tideripper and explosive Powder Lance. Tap to fire, hold to charge a piercing spear.
- Twenty-five areas to explore: kelp gardens, torchlit Sahuagin warrens, glowcap caverns, wreck graveyards and a drowned cathedral, linked by forking channels, dead-end crypts and hidden caches.
- Fourteen upgrades: earn Crystalines from every kill and spend them at any Dive Bell on hull, fins, Reflex Gel, Dash Shell, Vital Siphon and more.
- One deadly detour: the optional Submerged Ancient Biome, where guardians hit harder and rare crystal veins pay for the risk.
Built as a multi-hour expedition. Play on desktop with keyboard and mouse or a gamepad.
0 plays · Released October 30, 2026 · v4.2.0
How to play
A / D or arrow keys swim left and right. Space, J or left click fires the harpoon (hold to charge a piercing shot). Shift, K or right click dashes. E uses Dive Bells, the shop and gates, Q uses a Repair Kit, R or 1-5 switches harpoon, M opens the map, P pauses. Gamepad: stick or D-pad swims, X or RT fires, B or LT dashes, A interacts, R3 or D-pad down switches harpoon.
Tags
