Co-op games like Not Enough Space
Below are 8 cooperative Steam games similar to Not Enough Space, ranked by player overlap and content similarity. Every pick supports cooperative play — online co-op, LAN co-op, or shared/split-screen — so you can play with friends right out of the box. imho.run pulls from the same Steam category data Valve uses internally, so "Co-op" here matches what the store labels.
Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like Not Enough Space page.
Ranked picks
- 1
The Fibrous - Operation Reclaim
Online Co-op alternative to Not Enough Space — playable with friends. Shares Action and Adventure with Not Enough Space.
The Fibrous - Sci-Fi Online or Single-Player TPS (Over-The-Shoulder) covering the story of an ex-marine recruited by what's left of the military to help take back Earth after a meteor crash-lands into Earth and aliens with fiber-like skin emerge, thinking they can take this planet for their own.
- 2
Pinkwilds
Online Co-op alternative to Not Enough Space — playable with friends. Shares Action and Adventure with Not Enough Space.
A sci-fi multiplayer survival RPG with no guns - fight with weapons and magic instead. Explore an alien world, gather resources, craft gear, and build your base. Trade, form alliances, raid, or betray other players to survive.
- 3
Humanoid
Online Co-op alternative to Not Enough Space — playable with friends. Shares Action and Indie with Not Enough Space.
Embark on a heart-pounding journey in this survival open-world game, where a relentless creature, Humanoids prowls the landscape. Explore, craft, build, and fight for your life as you navigate the dangerous world.
- 4
Niktophobia
Online Co-op alternative to Not Enough Space — playable with friends. Shares Action and Indie with Not Enough Space.
NIKTOPHOBIA - sci-fi horror for 1-4 players. The team arrives at the space station to extract alien bio-samples. Players will use various tools and manipulate the station's energy to get out of trouble together.
- 5
SENTRY
Online Co-op alternative to Not Enough Space — playable with friends. Shares Action and Indie with Not Enough Space.
SENTRY is an action-defense first person shooter where you defend your spaceship against invading aliens. Plot an escape route through hostile space and battle the enemy across your vessel with the support of traps, turrets and environmental destruction.
- 6
MASS INVASION
Online Co-op alternative to Not Enough Space — playable with friends. Shares Action and Indie with Not Enough Space.
MASS INVASION is an open-world CO-OP tactical sci-fi survival game in both first-person and third-person. Fight aliens. Utilize realistic inventory and medical systems. Craft gear, build bases, manage your underground bunker, and survive!
- 7
Project Corruption
Online Co-op alternative to Not Enough Space — playable with friends. Shares Action and Indie with Not Enough Space.
Project Corruption throws you into the haunting walls of the I.B.I.S. space station as you respond to an S.O.S. signal in search of your wife. Uncover the stations dark secrets, confront monstrous horrors, and survive the aftermath of the failed experiments in immersive sci-fi horror experience.
- 8
Stellar Valkyrie
Online Co-op alternative to Not Enough Space — playable with friends. Shares Action and Indie with Not Enough Space.
Space bounty hunter Falco must explore the solar system in search of his ex-girlfriend and destroy the Black Star cult. Collect bounties, upgrade your equipment, explore planets, crack wise & fight aliens in this GZDoom-powered Retro-FPS adventure.