Descend as a Fathomwalker into the ruined depths of a drowned world in this co-op horror dungeon-crawler FPS. Explore the subterrane with friends, uncover forgotten facilities, and survive what lurks beneath. The Hull awaits.

Dive into abandoned underwater mining facilities built to extract Fathomite, a rare green ore once believed to be humanity’s last hope after an apocalyptic collapse. You play as a Fathomwalker, descending into the depths to gather vital resources while prolonged exposure to Fathomite has twisted those who lingered below into monstrous creatures. Between dives, your crew resides aboard The Hull, a rusted vessel that serves as your base of operations where you craft equipment, upgrade your loadout, and prepare for what lies ahead. Play solo or with up to three friends to brave deeper, deadlier dives together. <img class="bb_img" src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/3987150/extras/bc583facd8fc6b14003453b7f21b94f0.avif?t=1769550609" width=1560 height=102 /> Every facility is a deadly puzzle. Movement is deliberate. Mistakes are punished. Whether you’re navigating flooded machinery or carefully advancing through unstable, hostile environments, traversal demands focus and coordination. <video class="bb_img" autoplay muted loop playsinline poster="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/3987150/extras/a3c04e2679fc1531659517eb0eb4a498.poster.avif?t=1769550609" width=1170 height=658 ><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/3987150/extras/a3c04e2679fc1531659517eb0eb4a498.webm?t=1769550609" type="video/webm; codecs=vp9"><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/3987150/extras/a3c04e2679fc1531659517eb0eb4a498.mp4?t=1769550609" type="video/mp4"></video>  <img class="bb_img" src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/3987150/extras/c0971084e8b9c280761e7a34bc5364d1.avif?t=1769550609" width=1560 height=102 />Resources are limited. Every wasted bullet or reckless injury stacks the odds against you. Smart teams ration supplies, pick their fights, and know when to run<video class="bb_img" autoplay muted loop playsinline poster="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/3987150/extras/c3326145961bfd56c0892ea67f678264.poster.avif?t=1769550609" width=1170 height=658 ><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/3987150/extras/c3326145961bfd56c0892ea67f678264.webm?t=1769550609" type="video/webm; codecs=vp9"><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/3987150/extras/c3326145961bfd56c0892ea67f678264.mp4?t=1769550609" type="video/mp4"></video><img class="bb_img" src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/3987150/extras/5a608e2d6777f7f80b5f05417ede429d.avif?t=1769550609" width=1560 height=102 />Between dives, The Hull is your lifeline. This rusted vessel serves as your base of operations, where you regroup, spend Essence and Materials to craft weapons, suit upgrades, and items, and prepare for the next descent. Plan with your team, take a break, and brace yourself for whatever waits below.<video class="bb_img" autoplay muted loop playsinline poster="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/3987150/extras/b7ba1150092af9eb904f257371925280.poster.avif?t=1769550609" width=1170 height=658 ><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/3987150/extras/b7ba1150092af9eb904f257371925280.webm?t=1769550609" type="video/webm; codecs=vp9"><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/3987150/extras/b7ba1150092af9eb904f257371925280.mp4?t=1769550609" type="video/mp4"></video><img class="bb_img" src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/3987150/extras/b0b497bef111542728db1671a141bdd6.avif?t=1769550609" width=1560 height=102 />Acquire weapons and items that shape your descent. From SMGs and snipers to rifles and shotguns, each tool of survival offers a distinct edge against what waits in the dark. <video class="bb_img" autoplay muted loop playsinline poster="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/3987150/extras/4b5a98b637d763c1d7b961a45bc4277c.poster.avif?t=1769550609" width=1170 height=580 ><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/3987150/extras/4b5a98b637d763c1d7b961a45bc4277c.webm?t=1769550609" type="video/webm; codecs=vp9"><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/3987150/extras/4b5a98b637d763c1d7b961a45bc4277c.mp4?t=1769550609" type="video/mp4"></video><img class="bb_img" src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/3987150/extras/d0ce3ed2ba028cc1f701a4022403c42c.avif?t=1769550609" width=1560 height=102 />The deeper the facility, the greater the reward and the greater the danger. Each Dive ramps up in difficulty with more complex layouts and increasingly aggressive threats. Stay too long and the threat level rises, unleashing stronger enemies and destabilizing the environment. Completing your objectives quickly is the only way to survive. <video class="bb_img" autoplay muted loop playsinline poster="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/3987150/extras/439a186b05468d3e024534bb7063068f.poster.avif?t=1769550609" width=1170 height=658 ><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/3987150/extras/439a186b05468d3e024534bb7063068f.webm?t=1769550609" type="video/webm; codecs=vp9"><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/3987150/extras/439a186b05468d3e024534bb7063068f.mp4?t=1769550609" type="video/mp4"></video>

Good Game Database

The Hull Achievements