Co-op games like Operation Dimera
Below are 8 cooperative Steam games similar to Operation Dimera, 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 Operation Dimera page.
Ranked picks
- 1
VEIL
Online Co-op alternative to Operation Dimera — playable with friends. Shares Action and Adventure with Operation Dimera.
Squad-based Tactical PvE Co-op Action. Form 4-person squads of modern-day battle mages, make demonic pacts, and use your powers to recover artifacts and influence the fate of Velumgrad and The Veil.
- 2
Keep Fire 2
Online Co-op alternative to Operation Dimera — playable with friends. Shares Adventure with Operation Dimera.
A cooperative first-person PVE shooter for up to 6 players. Combine distinct classes, equip various weapons and freely modify attachments to fight endless waves of monsters in different worlds.Remember: Keep Fire. Never give enemies an opening.
- 3
Deborg Desolation Pre-Born
Online Co-op alternative to Operation Dimera — playable with friends. Shares Action and Adventure with Operation Dimera.
Deborg Desolation is a first-person indie game intended for the survival of mankind. Train to be a soldier capable of containing any injurious entity to achieve the survival of your own race, seek to plan strategies that allow your advancement without stopping.
- 4
Desdemona
Online Co-op alternative to Operation Dimera — playable with friends. Shares Action and Adventure with Operation Dimera.
Gather your courage and face the ghost danger.Clean the curses and hunt the ghost!
- 5
Renascor
Online Co-op alternative to Operation Dimera — playable with friends. Shares Action with Operation Dimera.
The spine of time has shattered. With your team of 1–4 experts, investigate divine anomalies, gather evidence, and seal reality itself. Following the lost teams, infiltrate history as Renascor’s final hope.
- 6
Purge Phalanx
Online Co-op alternative to Operation Dimera — playable with friends. Shares Action with Operation Dimera.
Unleash heavy weaponry to exterminate the demonic horde alone or up to 4 players online and/or in splitscreen
- 7
Alchemists
Online Co-op alternative to Operation Dimera — playable with friends. Shares Action and Adventure with Operation Dimera.
Alchemists is a Co-Op horror game that can be played with at least a minimum of 1 and a maximum of 4 players. Your goal is to expel the evil spirit from cursed places by completing the 4 Element ritual. Destroy the monster alone or with your team using your tools.
- 8
Xheres
Online Co-op alternative to Operation Dimera — playable with friends. Shares Action and Adventure with Operation Dimera.
Either FPS or TPS, choose your play style and survive the apocalypse on your own or with your friends. But one must know for sure it ain't gonna be easy, there are hordes waiting for you. Not even considering tough ones... Nevertheless it's gonna be fun.