Abyssus

 
Guns, gods, and cold saltwater
Abyssus drops a squad of “Brinehunters” into a drowned civilization and dares you to climb back out stronger. It’s a fast, co‑op roguelike FPS built around crisp weapon feel, bold modifiers, and rooms that reward risk. Don’t blink—the abyss shoots back.
How it plays
Runs flow through procedurally sequenced arenas stitched from hand‑made rooms. Eight base weapons anchor the kit, from punchy revolvers to chunky engine rifles. Then the fun starts: up to dozens of mods per gun flip behaviors—split‑shots, chaining arcs, corrosive payloads, alt‑fires. Relics and “blessings” layer team‑wide perks on top. It’s about building tempo, syncing cooldowns, and routing boss phases rather than face‑tanking them. Solo works; four‑player co‑op sings.
Key features

Brinepunk FPS: An underwater power fantasy with ancient tech and god‑tainted artifacts.
Run‑based structure: Procedural sequencing of 64 handcrafted rooms keeps routes fresh.
Weapon depth: 8 primaries customizable with around 45–48 mods and alt‑fires for wild synergy.
Buildcraft: Relics, blessings, charms, and forge mods stack into aggressive or supportive roles.
Co‑op focus: Up to 4‑player online with revive loops, role splits, and team buff “hymns.”
Boss variety: Multi‑phase guardians with pattern reads, not sponges—punish windows matter.

Quick facts

Release Date: 12 August 2025
Developer: DoubleMoose Games
Genre: Roguelike FPS, Co‑op
Setting: Ancient sunken city powered by “brine”
Features: 1–4 player co‑op, 64 handcrafted rooms, 8 weapons, ~45–48 weapon mods, relics/blessings, meta progression
Special Features: Team “Ocean Hymns” buffs, fast revive loops, post‑launch roadmap with modes and gear