IMHO.

Free games like Nightmare Invasion

Below are 9 free-to-play Steam games similar to Nightmare Invasion, 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 Nightmare Invasion page.

Ranked picks

  1. 1
    Bongo Cat — Steam game cover

    Bongo Cat

    Free-to-play alternative to Nightmare Invasion — no purchase or trial window. Shares Indie with Nightmare Invasion.

    Bongo cat needs your help. Bongo cat needz more hatz!!! Every time you press a key, Bongo cat will punch your taskbar. Type, click, play, work to collect more points. Which hats will you find?

    2025IndieSimulationMassively MultiplayerFreeDeck PlayableFree to playSimilar games →
  2. 2
    Sheepy: A Short Adventure — Steam game cover

    Sheepy: A Short Adventure

    Free-to-play alternative to Nightmare Invasion — no purchase or trial window. Shares Indie and Casual with Nightmare Invasion.

    A Short Handcrafted Pixel Art Platformer that follows Sheepy, an abandoned plushy brought to life. Sheepy: A Short Adventure is the first short game from MrSuicideSheep.

    2024IndieAdventureFree To PlayFreeDeck PlayableFree to playSimilar games →
  3. 3
    Awaria — Steam game cover

    Awaria

    Free-to-play alternative to Nightmare Invasion — no purchase or trial window. Shares Indie with Nightmare Invasion.

    Awaria is a short game about working in haunted maintenance tunnels.

    2024ActionIndieFree To PlayFreeDeck PlayableFree to playSimilar games →
  4. 4
    Grimm's Hollow — Steam game cover

    Grimm's Hollow

    Free-to-play alternative to Nightmare Invasion — no purchase or trial window. Shares Indie with Nightmare Invasion.

    A spooky, freeware RPG where you search the afterlife for your brother. Reap ghosts with your scythe, explore haunted caves, and eat ghostly treats on your journey through death.

    2019IndieAdventureRPGFreeDeck PlayableFree to playSimilar games →
  5. 5
    Virtual Cottage — Steam game cover

    Virtual Cottage

    Free-to-play alternative to Nightmare Invasion — no purchase or trial window. Shares Indie and Casual with Nightmare Invasion.

    Virtual Cottage gives you a comfy place to rest and be productive without any distractions. Open the game, set yourself a goal and enjoy the atmosphere.

    2020IndieSimulationFree To PlayFreeDeck PlayableFree to playSimilar games →
  6. 6
    The Expendabros — Steam game cover

    The Expendabros

    Free-to-play alternative to Nightmare Invasion — no purchase or trial window. Shares Indie with Nightmare Invasion.

    The Expendabros have assembled and set their sights on the forces of ruthless arms dealer Conrad Stonebanks in the forests of Eastern Europe.

    2014ActionIndieAdventureFreeDeck VerifiedFree to playSimilar games →
  7. 7
    Iron Snout — Steam game cover

    Iron Snout

    Free-to-play alternative to Nightmare Invasion — no purchase or trial window. Shares Indie with Nightmare Invasion.

    Iron Snout is a fast, colorful and brutal fighting game in which you will be helping a piglet fight for its life against hordes of wolves.

    2016ActionIndieFree To PlayFreeDeck PlayableFree to playSimilar games →
  8. 8
    Star Fetchers — Steam game cover

    Star Fetchers

    Free-to-play alternative to Nightmare Invasion — no purchase or trial window. Shares Indie with Nightmare Invasion.

    The introduction to a wild ride with gangsters and deep state conspiracy theories

    2020ActionIndieAdventureFreeDeck PlayableFree to playSimilar games →
  9. 9
    坍塌世界 — Steam game cover

    坍塌世界

    Free-to-play alternative to Nightmare Invasion — no purchase or trial window. Shares Strategy and Indie with Nightmare Invasion.

    "Collapsing World" is an innovative tower defense game blending deck-building and roguelike mechanics. Recruit unique companions, craft powerful skill decks, and tackle randomized stages. Deep strategy breaks the traditional TD mold—every run is a fresh challenge!

    2026StrategyIndieSimulationFreeFree to playSimilar games →