IMHO.

Co-op games like Eclipse Below

Below are 8 cooperative Steam games similar to Eclipse Below, 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 Eclipse Below page.

Ranked picks

  1. 1
    Fathoms — Steam game cover

    Fathoms

    Online Co-op alternative to Eclipse Below — playable with friends. Shares Action and Indie with Eclipse Below.

    Gather your crew and set off through hostile waters in this terrifying co-op survival game for up to 4 players. Scavenge for fuel, gear, and scrap while nameless horrors rise from beneath the waves to deny your escape.

    ActionIndieAdventureCo-opSimilar games →
  2. 2
    ApesCape — Steam game cover

    ApesCape

    Online Co-op alternative to Eclipse Below — playable with friends. Shares Action and Indie with Eclipse Below.

    In a deep-sea station lost at the bottom of the ocean, the pressure is rising and water is flooding the facility. In this cooperative FPS, every second counts. Work together to find the exit before everything is swallowed by the depths.

    ActionIndieAdventureCo-opSimilar games →
  3. 3
    Knightward — Steam game cover

    Knightward

    Online Co-op alternative to Eclipse Below — playable with friends. Shares Action and Strategy with Eclipse Below.

    Build towers to safeguard your crystal while you loot treasure-filled rooms and grow stronger. Knightward is a tower defense action rogue-like for 1-4 players. Will your defenses hold off enemies long enough to discover the deepest levels of the dungeon?

    2026ActionStrategyIndieCo-opSimilar games →
  4. 4
    Catacrypt — Steam game cover

    Catacrypt

    Online Co-op alternative to Eclipse Below — playable with friends. Shares Action and Indie with Eclipse Below.

    Catacrypt is an online co-op roguelite dungeon crawler. Enter procedurally generated dungeons to obtain powerful upgrades and craft unique weapons. Descend floors and fight increasingly harder enemies and bosses, all to reach the bottom.

    ActionIndieAdventureCo-opSimilar games →
  5. 5
    Bravest Burden — Steam game cover

    Bravest Burden

    Online Co-op alternative to Eclipse Below — playable with friends. Shares Action and Indie with Eclipse Below.

    A dark fantasy Action RPG for a fellowship of four. Create your hero and brave a ravaged world with up to 3 friends or strangers. Survive brutal encounters, overcome obstacles, hunt for powerful gear to perfect your build, and stand together to protect the prophecy.

    ActionIndieAdventureCo-opSimilar games →
  6. 6
    The Dust Between: Observer — Steam game cover

    The Dust Between: Observer

    Online Co-op alternative to Eclipse Below — playable with friends. Shares Action and Strategy with Eclipse Below.

    A 1-4 player co-op horror strategy game where you guide unseen clients, draw the map, send commands, solve cases, and survive the dangers inside your own office.

    2026ActionStrategyAdventureCo-opSimilar games →
  7. 7
    Cellular Frontier — Steam game cover

    Cellular Frontier

    Online Co-op alternative to Eclipse Below — playable with friends. Shares Action and Strategy with Eclipse Below.

    Explore the organs of the human body to fight off the rampant infection and save the patient - with your friends, or solo!

    ActionStrategyIndieCo-opSimilar games →
  8. 8
    Ignite the Depths — Steam game cover

    Ignite the Depths

    Online Co-op alternative to Eclipse Below — playable with friends. Shares Action and Indie with Eclipse Below.

    Ignite the Depths is an atmospheric dark-fantasy PvE dungeon crawler set within a sprawling, hand-crafted labyrinth. Descend into the darkness alone or unite with up to 4 players in a co-op adventure. Will you conquer the Abyss?

    2026ActionIndieAdventureCo-opSimilar games →