Co-op games like Diamond Hunt
Below are 8 cooperative Steam games similar to Diamond Hunt, 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 Diamond Hunt page.
Ranked picks
- 1
Project Corruption
Co-op alternative to Diamond Hunt — playable with friends. Shares Action and Early Access with Diamond Hunt.
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.
- 2
Voodoom
Co-op alternative to Diamond Hunt — playable with friends. Shares Action and Adventure with Diamond Hunt.
Voodoom is a casual asymmetric horror game set in a sprawling, eerie mansion. Team up as voodoo dolls to explore, collect powerups, and seek revenge on the monster that cursed you. Or, lurk in the darkness as the giant monster, ready to strike and eliminate the dolls before they grow too powerful.
- 3
Lethal Company
Online Co-op alternative to Diamond Hunt — playable with friends. Shares Action and Adventure with Diamond Hunt.
A co-op horror about scavenging at abandoned moons to sell scrap to the Company.
- 4
Nuclear Nightmare
Online Co-op alternative to Diamond Hunt — playable with friends. Shares Action and Adventure with Diamond Hunt.
Venture forth as part of a specialized team of fellow players tasked with retrieving classified materials, evading the black goo virus, and the nightmarish entities it has spawned. With time running out before the US government initiates a devastating nuclear strike to contain the spreading menace.
- 5
Bunker Invaders
Online Co-op alternative to Diamond Hunt — playable with friends. Shares Action with Diamond Hunt.
A co-op horror game where you must scavenge for loot and maintain the bunker to keep it standing
- 6
War of the Worlds
Online Co-op alternative to Diamond Hunt — playable with friends. Shares Action and Adventure with Diamond Hunt.
Hardcore horror open world survival game which throws the player into the middle of the extermination of mankind with the sole purpose of surviving long enough to find a way to bring down the alien machines. Loot buildings, fight off hostile survivors, stay hidden from the machines, and stay alive.
- 7
BIGFOOT
Online Co-op alternative to Diamond Hunt — playable with friends. Shares Action and Adventure with Diamond Hunt.
You are a Bigfoot hunter with an important mission: to put an end to rumours once and for all and prove to yourself that Bigfoot is not just a myth or an invention of the mind...
- 8
CashGrab
Online Co-op alternative to Diamond Hunt — playable with friends. Shares Action and Casual with Diamond Hunt.
CashGrab is a game which redefines the asymmetric horror genre. Grab some friends and get ready for a trip to #ScaryTown! This is literally the best game you'll ever play.