IMHO.

Co-op games like Bunker Invaders

Below are 8 cooperative Steam games similar to Bunker Invaders, 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 Bunker Invaders page.

Ranked picks

  1. 1
    Nuclear Nightmare — Steam game cover

    Nuclear Nightmare

    Online Co-op alternative to Bunker Invaders — playable with friends. Shares Action and Indie with Bunker Invaders.

    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.

    2024ActionIndieAdventure6.99 USDDeck PlayableCo-opSimilar games →
  2. 2
    Holey — Steam game cover

    Holey

    Online Co-op alternative to Bunker Invaders — playable with friends. Shares Action and Indie with Bunker Invaders.

    A co-op horror game where you are part of a crew sheltering in a collapsed tunnel, scavenging loot across maps filled with deadly creatures born from a biological war. Feed the creature, convert its waste into fuel, and reach the radio tower

    2026ActionIndieAdventureCo-opSimilar games →
  3. 3
    PILGRIM — Steam game cover

    PILGRIM

    Online Co-op alternative to Bunker Invaders — playable with friends. Shares Action and Indie with Bunker Invaders.

    Pilgrim is a medieval-based, co-op horror, adventure. Can you and your friends make it to the end of The Road?

    2024ActionIndieAdventure7.99 USDDeck PlayableCo-opSimilar games →
  4. 4
    Lethal Company — Steam game cover

    Lethal Company

    Online Co-op alternative to Bunker Invaders — playable with friends. Shares Action and Indie with Bunker Invaders.

    A co-op horror about scavenging at abandoned moons to sell scrap to the Company.

    2023ActionIndieAdventure9.99 USDDeck PlayableCo-opSimilar games →
  5. 5
    SANTA — Steam game cover

    SANTA

    Online Co-op alternative to Bunker Invaders — playable with friends. Shares Action with Bunker Invaders.

    A 1-4 player co-op Christmas horror game. You have 3 days to deliver the presents and save Christmas, or die trying.

    2024ActionAdventure9.99 USDCo-opSimilar games →
  6. 6
    MIMESIS — Steam game cover

    MIMESIS

    Online Co-op alternative to Bunker Invaders — playable with friends. Shares Action and Indie with Bunker Invaders.

    4 Player co-op survival horror game. When the cursed rain falls, 'Mimesis' appear, perfectly imitating your teammates, bringing a new level of tension you've never experienced before.

    2025ActionIndieAdventure9.99 USDDeck VerifiedCo-opSimilar games →
  7. 7
    Radio Decay — Steam game cover

    Radio Decay

    Online Co-op alternative to Bunker Invaders — playable with friends. Shares Action and Indie with Bunker Invaders.

    A 1-6 player co-op survival horror set in a supernatural nuclear apocalypse. Drop-pod into an abandoned city to extract radioactive artifacts while being hunted by giant bug-like monsters. Rebuild your decaying body with prosthetic limbs, arm yourself, and radio your friends for help.

    ActionIndieAdventureCo-opSimilar games →
  8. 8
    Sketchy's Contract — Steam game cover

    Sketchy's Contract

    Online Co-op alternative to Bunker Invaders — playable with friends. Shares Action and Indie with Bunker Invaders.

    A 1-8 player co-op sci-fi looter horror game that takes place on a mysterious asteroid belt where players must complete contracts by traveling to exotic planets to kill creatures, find loot, and/or farm planetary materials that they must return to an ominous figure named Sketchy.

    2024ActionIndieAdventure8.99 USDDeck PlayableCo-opSimilar games →