Abyssus (v1.3.62817 & ALL DLC)

An ancient kingdom lies drowned beneath crushing ocean depths, and its ruins turn every firefight into a frantic struggle for survival. Abyssus is a co-op roguelite FPS built around “brinepunk” technology: strange weapons and equipment draw power from a precious deep-sea substance, while corrupted creatures guard the path forward. The mood blends pulpy treasure-hunting adventure with oppressive underwater horror, trading slow scuba simulation for rapid movement, explosive abilities, and constant enemy pressure. Whether played alone or with up to three friends, each descent feels like a hostile expedition into a place that clearly does not want visitors.

Runs move through a pool of 64 handcrafted combat spaces arranged in varying sequences, so the routes and encounters shift even as the individual arenas stay deliberately designed. Players select suits, skills, weapons, and upgrades before entering, then alter a build during a run with blessings and modifications that add elemental effects or change how a gun behaves. Eight brine-powered weapons support a substantial mod pool, encouraging teams to combine crowd control, burst damage, mobility, and defensive tools rather than simply bring four versions of the same loadout. Combat demands sharp aim and awareness, but positioning matters just as much when swarms of mutated enemies, 36 enemy types, and large bosses begin filling an arena.

Abyssus stands out through its striking submerged-ruin setting and the emphasis it places on coordinated build synergy rather than lone-wolf scoring. Its roguelite progression unlocks more options between attempts, giving failed expeditions a useful sense of forward momentum without removing the need to learn enemy patterns and improve mechanically. Fans of Risk of Rain 2, Roboquest, or Gunfire Reborn should recognize the satisfying loop of short-term power spikes, repeat runs, and chaotic cooperative battles, though the first-person perspective makes aiming and movement more immediate. Newcomers can enjoy the escalating unlocks and team support, while experienced co-op shooter players will get the most from experimenting with specialized roles and high-level modifier combinations.