The retro-inspired shooter Nightmare Reaper just received a massive update, adding 2–4 player co-op. This change builds on both the single-player and multiplayer parts of the game with new systems, enemies, and better gameplay.
The update lets players go through the full game together, turning what was a solo title into a shared experience. As shown in the official listing, you can now play the entire campaign with friends, including the extended progression modes.
At the center of this update is the 4-player co-op, allowing friends to clear levels, beat enemies, and level up characters as a team. This mode goes beyond the main story and includes extra gameplay layers.
The update also makes the late-game experience better. Developers improved New Game+, adding new progression features that make the game more replayable for both solo and multiplayer runs.
Along with co-op, a new competitive option is now available. The update adds a deathmatch mode with custom rules, where players can fight in unique matches using randomly generated weapons.
Beyond new modes, the update adds more content to keep people playing. There are new enemy types to increase the challenge, and the weapon list has grown to encourage trying different styles. The developers added 15 new “shiny” weapon variants with unique mechanics, bringing the total arsenal to 99 unique weapons with countless random effects.
These changes build on the game’s mix of retro FPS action and roguelite systems. From a Linux perspective, the game continues to run well. It works effectively through Proton and is Steam Deck Verified, making it a great pick for handheld gaming.
The co-op update is a free addition for everyone who owns the game. This approach gives old players a reason to come back while bringing in new users who want a multiplayer experience. With these new systems, Nightmare Reaper has become a much more versatile title.
My Opinion: Nightmare Reaper has been a “hidden gem” for Linux gamers since it left early access back in 2022. Seeing a developer support a four-year-old indie title with a massive, free co-op update in 2026 is rare. Usually, by this point, studios have moved on to a sequel. Having played through the original campaign on a Steam Deck, I can say that adding three more players to this level of chaos is going to be intense.
