Co-op games like OnlyAliens
Below are 8 cooperative Steam games similar to OnlyAliens, 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 OnlyAliens page.
Ranked picks
- 1
STARSHIP BLOOPERS
Online Co-op alternative to OnlyAliens — playable with friends. Shares Action and Adventure with OnlyAliens.
STARSHIP BLOOPERS is a chaotic co-op space survival game where one wrong move can doom the mission. Play with 2 to 6 crewmates as you traverse space, gather resources, survive disasters, battle aliens and each other's incompetence before the sun goes supernova. Can you keep your SHIP together?
- 2
Dear Passengers
Online Co-op alternative to OnlyAliens — playable with friends. Shares Action and Adventure with OnlyAliens.
Play in co-op as the crew of the world’s worst airline. Your plane is falling apart, your cargo is illegal, and passenger safety barely makes the list.
- 3
They Speak To Us
Online Co-op alternative to OnlyAliens — playable with friends. Shares Action and Adventure with OnlyAliens.
A co-op horror about collecting monsters for your mysterious employer.
- 4
UNFROST
Online Co-op alternative to OnlyAliens — playable with friends. Shares Action and Adventure with OnlyAliens.
UNFROST is a co-op Antarctic horror FPS about hunting ancient entities known as the Riftborne. Gather evidence, survive extreme conditions, prepare a nuclear strike, and extract before impact.
- 5
Lethal Company
Online Co-op alternative to OnlyAliens — playable with friends. Shares Action and Adventure with OnlyAliens.
A co-op horror about scavenging at abandoned moons to sell scrap to the Company.
- 6
Gamble Hunters
Online Co-op alternative to OnlyAliens — playable with friends. Shares Action and Adventure with OnlyAliens.
Can a 60-second hunt make you rich? Prove it. Gamble Hunters is a casino action roguelite for 1–4 players. Shoot monsters, bet shared funds, and spend your winnings on gun upgrades and artifacts, or repay the crew's debt. The winnings are yours. The debt is everyone's. What's your next move?
- 7
CheatCheat
Online Co-op alternative to OnlyAliens — playable with friends. Shares Action with OnlyAliens.
A co-op exam cheating game where you and up to 5 other students explore schools filled with teenage hijinks ran by a demonic faculty. Steal answers, bully nerds, pray to a magic 8 ball - develop your cheating skills all so you can pass the impossible year-end exam by any means necessary.
- 8
Broke Wizards
Online Co-op alternative to OnlyAliens — playable with friends. Shares Action and Adventure with OnlyAliens.
A 1-6 player co-op game where you and your Wizard roommates slay monsters, go racing, play prop hunt or do other crazy jobs to pay rent to your giant Imp Landlord before he eats you.