IMHO.

Co-op games like No Witnesses

Below are 8 cooperative Steam games similar to No Witnesses, 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 No Witnesses page.

Ranked picks

  1. 1
    Blind Gavel — Steam game cover

    Blind Gavel

    Online Co-op alternative to No Witnesses — playable with friends. Shares Strategy and Indie with No Witnesses.

    A Victorian age auction house built on deception. The auctioneer knows the real value of each item and quietly enriches partners hidden in the crowd. Bluff, pull the con, and bid before the room votes on your death

    2026StrategyIndieCasualCo-opSimilar games →
  2. 2
    Castle of Blackwater — Steam game cover

    Castle of Blackwater

    Online Co-op alternative to No Witnesses — playable with friends. Shares Action and Strategy with No Witnesses.

    Castle of Blackwater is a 2D, action-packed, social deduction game with a magical twist. In this intense game of trust and betrayal, up to 10 strangers are trapped in a castle of danger and deception, with a mission to complete tasks and escape with their lives.

    2025ActionStrategyIndieFreeCo-opSimilar games →
  3. 3
    The Gaslight — Steam game cover

    The Gaslight

    Online Co-op alternative to No Witnesses — playable with friends. Shares Action and Strategy with No Witnesses.

    The Gaslight is a chaotic social deduction game where one player is the Murderer, one is the Detective, and everyone else is trying to survive. Talk, lie, complete missions, use your pepper spray, and figure out who you can trust before someone gets stabbed.

    2026ActionStrategyCasualCo-opSimilar games →
  4. 4
    Story Bored — Steam game cover

    Story Bored

    Online Co-op alternative to No Witnesses — playable with friends. Shares Action and Strategy with No Witnesses.

    DIRECT, CAST, AND DRAW... THEN PRAY YOUR FRIENDS KNOW HOW TO VOICE IT OVER...

    2026ActionStrategyIndie6.99 USDCo-opSimilar games →
  5. 5
    Club Werewolf — Steam game cover

    Club Werewolf

    Online Co-op alternative to No Witnesses — playable with friends. Shares Strategy and RPG with No Witnesses.

    In this Tudor town, a villager goes missing every night. Can you uncover the werewolves before you’re next? An online game for 4-16 players.

    2027StrategyMassively MultiplayerRPGFreeCo-opSimilar games →
  6. 6
    Catolonizer — Steam game cover

    Catolonizer

    Online Co-op alternative to No Witnesses — playable with friends. Shares Strategy and Indie with No Witnesses.

    Catolonizer is an online social deduction game for up to 15 players. Complete tasks to earn coins, buy items from the Merchant, and use your secret ability at night. Outsmart the others and fulfill your unique win condition!

    2025StrategyIndieRPG5.99 USDCo-opSimilar games →
  7. 7
    Alterum — Steam game cover

    Alterum

    Online Co-op alternative to No Witnesses — playable with friends. Shares Action and Indie with No Witnesses.

    A multiplayer social deduction horror where spells are spoken aloud. One of you is altered. Cast magic with your voice, hunt the traitor, survive the ritual. Every word can save - or kill.

    2026ActionIndieCo-opSimilar games →
  8. 8
    Magic Quest Online — Steam game cover

    Magic Quest Online

    Online Co-op alternative to No Witnesses — playable with friends. Shares Strategy and Indie with No Witnesses.

    A bright, colorful game full of unexpected surprises and offbeat humor. Here, anyone can become a hero by battling the environment and rivals alike. Join right now!

    StrategyIndieAdventureFreeCo-opSimilar games →