IMHO.

Co-op games like The Architect's Game

Below are 8 cooperative Steam games similar to The Architect's Game, 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 The Architect's Game page.

Ranked picks

  1. 1
    LOCKDOWN Protocol — Steam game cover

    LOCKDOWN Protocol

    Online Co-op alternative to The Architect's Game — playable with friends. Shares Indie and Casual with The Architect's Game.

    A first person social deduction game, combining real time action and communication, playable up to 16 players. While most players will cooperate to complete objectives to ensure victory, a small portion of dissidents will try their best to stop them at all cost, without being caught.

    2025ActionStrategyIndie9.99 USDDeck PlayableCo-opSimilar games →
  2. 2
    Silent Howl — Steam game cover

    Silent Howl

    Online Co-op alternative to The Architect's Game — playable with friends. Shares Indie with The Architect's Game.

    In Silent Howl, every night is a fight for survival. Villagers must unmask the Werewolves lurking among them, ready to strike from the shadows. But beware, powerful hidden roles can shift the balance. Will you expose the truth and save the village, or tear it apart from within?

    2026ActionStrategyIndie7.64 USDCo-opSimilar games →
  3. 3
    Sincognito — Steam game cover

    Sincognito

    Online Co-op alternative to The Architect's Game — playable with friends. Shares Indie with The Architect's Game.

    An social deduction investigation horror game where one of you is secretly possessed by a Deadly Sin. Use stealth and proximity chat to cooperate or deceive as you gather clues and compare findings to deduce which Sin is haunting the castle.

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

    Sanitism

    Online Co-op alternative to The Architect's Game — playable with friends. Shares Indie and Early Access with The Architect's Game.

    Sanitism: A rare mental illness with an unknown origin that causes its victims to lose their rationality and empathy, leading to uncontrollable, violent behavior. The disease induces a state of severe aggression, prompting individuals to attack anyone in their vicinity.

    2025StrategyIndieRPG9.99 USDCo-opSimilar games →
  5. 5
    Spy Carnival — Steam game cover

    Spy Carnival

    Online Co-op alternative to The Architect's Game — playable with friends. Shares Indie with The Architect's Game.

    Spy Carnival is a 2-10 player social deception game set in a vibrant, chaotic funfair. Spies hide among the crowd, sabotaging rides and eliminating visitors while blending in with NPCs. Officers must stay sharp, read the crowd and take down the spies before the carnival turns into complete chaos.

    ActionIndieCo-opSimilar games →
  6. 6
    Who Do Voodoo — Steam game cover

    Who Do Voodoo

    Online Co-op alternative to The Architect's Game — playable with friends. Shares Indie and Casual with The Architect's Game.

    A social deduction game where crafted cards become spells. Protect allies, sabotage rivals, or prank everyone in a magical fight for survival.

    2026StrategyIndieAdventure3.59 USDCo-opSimilar games →
  7. 7
    I'm Truely a Good Guy! — Steam game cover

    I'm Truely a Good Guy!

    Online Co-op alternative to The Architect's Game — playable with friends. Shares Casual and Early Access with The Architect's Game.

    Welcome to Cattlehorse Corp! Here, deadlines are brutal and backstabbers abound. Start missions with up to 10 staffers. Facing high - risk tasks? We’ll assign helper bots! Use wacky gear, bluff, or double - cross. Watch out—drones and hostile bots attack. Only the survivors get ahead!

    2025CasualEarly Access4.99 USDCo-opSimilar games →
  8. 8
    Guillotine — Steam game cover

    Guillotine

    Online Co-op alternative to The Architect's Game — playable with friends. Shares Indie and Casual with The Architect's Game.

    Guillotine is a multiplayer game of social deduction, with a pinch of survival. You're in a tavern in the woods, but someone is a necromorph hungry for human meat. Guillotine the necromorph, or get eaten alive.

    2022IndieAdventureCasual4.99 USDCo-opSimilar games →