IMHO.

Free games like Interregnum

Below are 8 free-to-play Steam games similar to Interregnum, 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 Interregnum page.

Ranked picks

  1. 1
    Indigo Park: Chapter 1 — Steam game cover

    Indigo Park: Chapter 1

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

    Explore the abandoned childhood wonder of Indigo Park! Guided by Rambley the Raccoon, help restore power to the destroyed amusement park while you run from the reason it shut down.

    2024ActionIndieAdventureFreeDeck PlayableFree to playSimilar games →
  2. 2
    STRAFTAT — Steam game cover

    STRAFTAT

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

    STRAFTAT is a 1v1/2v2 ONLINE first person SHOOTER with quick rounds in over 350 MAPS ; Including all WEAPONS, proximity chat and 4 players FFA.

    2024ActionFreeDeck PlayableFree to playSimilar games →
  3. 3
    The Lab — Steam game cover

    The Lab

    Free-to-play alternative to Interregnum — 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 →
  4. 4
    Landfall Archives — Steam game cover

    Landfall Archives

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

    Break into the Landfall Archives to steal and play previously unreleased games, demos, interactive slide shows, and even an unreleased version of Totally Accurate Battle Simulator from 2017!

    2023ActionStrategyIndieFreeFree to playSimilar games →
  5. 5
    Outpath: First Journey — Steam game cover

    Outpath: First Journey

    Free-to-play alternative to Interregnum — 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 →
  6. 6
    Die in the Dungeon: Origins — Steam game cover

    Die in the Dungeon: Origins

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

    Fight your way through a mysterious dungeon in this deck-building, turn-based roguelike game where you don't use cards, but DICE! Deal with enemies by combining dice on your board, boost their effects with magical relics, and discover the story behind Die in the Dungeon!

    2023StrategyIndieRPGFreeDeck VerifiedFree to playSimilar games →
  7. 7
    NERTS! Online — Steam game cover

    NERTS! Online

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

    NERTS! Online is a fast-paced competitive solitaire game for you and up to five of your friends, played the same way we play it at the Zachtronics office!

    2021ActionIndieFree To PlayFreeFree to playSimilar games →
  8. 8
    Jigsaw Puzzle Dreams — Steam game cover

    Jigsaw Puzzle Dreams

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

    Beautiful Multiplayer Jigsaw Puzzle game where you can design the room you play in!

    2021IndieFree To PlayCasualFreeDeck PlayableFree to playSimilar games →