IMHO.

Co-op games like Treasure Hunters

Below are 8 cooperative Steam games similar to Treasure Hunters, 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 Treasure Hunters page.

Ranked picks

  1. 1
    Treasure Hunters: Prologue — Steam game cover

    Treasure Hunters: Prologue

    Online Co-op alternative to Treasure Hunters — playable with friends. Shares Action and Indie with Treasure Hunters.

    Treasure Hunters: Prologue is a free version of 'Treasure Hunters', an intense, co-op treasure-hunting game set in mysterious dungeons filled with puzzles, platforms, and deadly creatures, where your goal is to find and steal the most valuable treasures

    2025ActionIndieAdventureFreeCo-opSimilar games →
  2. 2
    DEATH FROM BELOW — Steam game cover

    DEATH FROM BELOW

    Online Co-op alternative to Treasure Hunters — playable with friends. Shares Action and Adventure with Treasure Hunters.

    DEATH FROM BELOW is a 1-4 player co-op horror game where you and your crew hunt for sunken relics on a steam-powered trawler: navigate cursed waters, operate your ship's steam-driven machinery, and sharpen your harpoon. Beware of the eldritch creatures guarding their treasures beneath the surface.

    ActionAdventureSimulationCo-opSimilar games →
  3. 3
    The 4 Masked — Steam game cover

    The 4 Masked

    Online Co-op alternative to Treasure Hunters — playable with friends. Shares Action and Indie with Treasure Hunters.

    A 4-player co-op FPS adventure where you swing through trees using vines, escape wild animals, and survive dangerous biomes. Each player has a unique role, and teamwork is the key to survival.

    2026ActionIndieAdventureCo-opSimilar games →
  4. 4
    Backrooms: The Last Observer — Steam game cover

    Backrooms: The Last Observer

    Online Co-op alternative to Treasure Hunters — playable with friends. Shares Indie and Adventure with Treasure Hunters.

    Backrooms: The Last Observer is a cooperative horror game. Descend into something that resists understanding, where perception itself begins to fracture. You are here not to fight, but to witness — and sometimes, witnessing is the worst thing you can do.

    2026IndieAdventureSimulation1.19 USDCo-opSimilar games →
  5. 5
    Backrooms: The Others — Steam game cover

    Backrooms: The Others

    Online Co-op alternative to Treasure Hunters — playable with friends. Shares Indie and Adventure with Treasure Hunters.

    Backrooms: The Others is a cooperative horror game for up to 4 players where you will be forced to explore these unknown nooks and crannies, trying to survive in this complex world where death can be waiting for you at every turn!

    2025IndieAdventureSimulation2.99 USDCo-opSimilar games →
  6. 6
    Backrooms: The Deep Dark — Steam game cover

    Backrooms: The Deep Dark

    Online Co-op alternative to Treasure Hunters — playable with friends. Shares Indie and Adventure with Treasure Hunters.

    Backrooms: The Deep Dark is a 4-player cooperative horror game where you will survive in a mysterious scary atmospheric world, wander through unknown dark corners and get scared of every nook and cranny!

    2025IndieAdventureSimulation2.99 USDCo-opSimilar games →
  7. 7
    EXTANT: Zombie Eradication Co-op Simulation — Steam game cover

    EXTANT: Zombie Eradication Co-op Simulation

    Online Co-op alternative to Treasure Hunters — playable with friends. Shares Action and Indie with Treasure Hunters.

    The apocalypse was years ago. Those still living are termed the 'Extant'. Millions of walking dead still roam the cities. Extant SOG groups of four operators have been tasked with infiltrating areas with supplies to retrieve for the Extant civilians. You are one of them. A 4-person CO-OP 3D shooter.

    ActionIndieAdventureCo-opSimilar games →
  8. 8
    Mimic — Steam game cover

    Mimic

    Online Co-op alternative to Treasure Hunters — playable with friends. Shares Action and Indie with Treasure Hunters.

    Deduce who you can trust in this asymmetrical online survival horror game for up to 10 players. Solve the objectives, survive the killer Android hunting you, and hunt from the shadows as the Mimic; a shape-shifting terror hiding amongst you.

    2026ActionIndieAdventureCo-opSimilar games →