IMHO.

Free games like Project Tomorrow

Below are 8 free-to-play Steam games similar to Project Tomorrow, ranked by player overlap and content similarity. No purchase or Steam login required to view the list. Every pick is a full free-to-play title — not a demo, trial, or time-limited giveaway. imho.run's catalogue refreshes daily, so newly free or newly popular titles surface here without manual editing.

Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like Project Tomorrow page.

Ranked picks

  1. 1
    The Lab — Steam game cover

    The Lab

    Free-to-play alternative to Project Tomorrow — no purchase or trial window.

    Welcome to The Lab, a compilation of Valve’s room-scale VR experiments set in a pocket universe within Aperture Science. Fix a robot, defend a castle, adopt a mechanical dog, and more. Still not sold? It’s free!

    2016Free To PlayFreeFree to playSimilar games →
  2. 2
    Outpath: First Journey — Steam game cover

    Outpath: First Journey

    Free-to-play alternative to Project Tomorrow — no purchase or trial window.

    Outpath: First Journey is a prologue chapter of the main game, Outpath. An experimental clicker base building game. Craft, gather & manage resources, build your base and buy more islands to exploit and expand!

    2022IndieAdventureCasualFreeDeck PlayableFree to playSimilar games →
  3. 3
    The Riftbreaker: Prologue — Steam game cover

    The Riftbreaker: Prologue

    Free-to-play alternative to Project Tomorrow — no purchase or trial window. Shares Strategy with Project Tomorrow.

    The Riftbreaker: Prologue allows you to experience the events taking place before the story campaign of the main game. Explore an entirely new world. Gather resources. Build up a base. Defend yourself from thousands of alien creatures.

    2020ActionStrategyIndieFreeDeck PlayableFree to playSimilar games →
  4. 4
    Unturned — Steam game cover

    Unturned

    Free-to-play alternative to Project Tomorrow — no purchase or trial window.

    You're a survivor in the zombie infested ruins of society, and must work with your friends and forge alliances to remain among the living.

    2017ActionIndieAdventureFreeDeck PlayableFree to playSimilar games →
  5. 5
    Muck — Steam game cover

    Muck

    Free-to-play alternative to Project Tomorrow — no purchase or trial window.

    Muck is a survival-roguelike. Collect resources, find items & build a base to survive for as long as you can.

    2021ActionIndieAdventureFreeDeck PlayableFree to playSimilar games →
  6. 6
    Supermarket Together — Steam game cover

    Supermarket Together

    Free-to-play alternative to Project Tomorrow — no purchase or trial window.

    The multiplayer supermarket has arrived to your neighbourhood for free! Stock your shop space, unlock perks and franchises, hire employees or chase those pesky shoplifters. The more players, the more action!

    2024IndieSimulationFree To PlayFreeDeck PlayableFree to playSimilar games →
  7. 7
    Fallout Shelter — Steam game cover

    Fallout Shelter

    Free-to-play alternative to Project Tomorrow — no purchase or trial window.

    Fallout Shelter puts you in control of a state-of-the-art underground Vault from Vault-Tec. Build the perfect Vault, keep your Dwellers happy, and protect them from the dangers of the Wasteland.

    2017SimulationRPGFree To PlayFreeDeck VerifiedFree to playSimilar games →
  8. 8
    Bloons TD Battles — Steam game cover

    Bloons TD Battles

    Free-to-play alternative to Project Tomorrow — no purchase or trial window. Shares Strategy with Project Tomorrow.

    Go head to head with other players in a Bloon-popping battle for victory. From the creators of best-selling Bloons TD 5, this all new Battles game is specially designed for multiplayer combat, featuring the ability to control bloons directly and send them charging past your opponent's defenses.

    2016ActionStrategyFree To PlayFreeDeck PlayableFree to playSimilar games →