IMHO.

Free games like The Nightmare Arena

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

Ranked picks

  1. 1
    Moonring — Steam game cover

    Moonring

    Free-to-play alternative to The Nightmare Arena — no purchase or trial window.

    A dark-fantasy, turn-based, retro-fusion of classic turn-based RPGs and roguelikes, all presented with a unique neon aesthetic.

    2023RPGFreeDeck VerifiedFree to playSimilar games →
  2. 2
    Die in the Dungeon: Origins — Steam game cover

    Die in the Dungeon: Origins

    Free-to-play alternative to The Nightmare Arena — no purchase or trial window. Shares Strategy with The Nightmare Arena.

    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 →
  3. 3
    Limbus Company — Steam game cover

    Limbus Company

    Free-to-play alternative to The Nightmare Arena — no purchase or trial window.

    As the Executive Manager of Limbus Company, lead your group of twelve Sinners, venture into the buried facilities of Lobotomy Corporation, and lay claim on the Golden Boughs.

    2023FreeDeck PlayableFree to playSimilar games →
  4. 4
    Dota Underlords — Steam game cover

    Dota Underlords

    Free-to-play alternative to The Nightmare Arena — no purchase or trial window. Shares Strategy with The Nightmare Arena.

    Hire a crew and destroy your rivals in this new strategy battler set in the world of Dota. Introducing Season One: Explore White Spire and earn rewards on the Battle Pass. Pick from several different game modes, play on your own or with friends, and take advantage of crossplay on PC and mobile.

    2019StrategyFree To PlayCasualFreeDeck VerifiedFree to playSimilar games →
  5. 5
    Super Auto Pets — Steam game cover

    Super Auto Pets

    Free-to-play alternative to The Nightmare Arena — no purchase or trial window. Shares Strategy with The Nightmare Arena.

    Build the strongest team of pets and tussle with your friends!

    2021StrategyFree To PlayFreeDeck PlayableFree to playSimilar games →
  6. 6
    Minion Masters — Steam game cover

    Minion Masters

    Free-to-play alternative to The Nightmare Arena — no purchase or trial window. Shares Strategy with The Nightmare Arena.

    An addictive fast-paced hybrid of Card games & Tower-Defense. Play 1v1 - or bring a friend for 2v2 - and engage in epic online multiplayer battles full of innovative strategy and awesome plays! Collect 200+ cards with unique mechanics, all free!

    2019ActionStrategyIndieFreeFree to playSimilar games →
  7. 7
    KARDS - The WW2 Card Game — Steam game cover

    KARDS - The WW2 Card Game

    Free-to-play alternative to The Nightmare Arena — no purchase or trial window. Shares Strategy with The Nightmare Arena.

    KARDS, The World War II Card Game, combines traditional CCG gameplay with innovative mechanics inspired by classic strategy games and real battlefield tactics. Take command and challenge other players in grand-scale warfare on the ground, air, or seas.

    2020StrategyIndieFree To PlayFreeFree to playSimilar games →
  8. 8
    Wizard101 — Steam game cover

    Wizard101

    Free-to-play alternative to The Nightmare Arena — no purchase or trial window. Shares Strategy with The Nightmare Arena.

    Unleash your inner magic and prepare to unravel the mysteries surrounding a death professor gone rogue. Darkness threatens to engulf the Spiral as you master powerful spells, explore over 22 whimsical worlds, and team-up with friends in this nostalgic wizard turn-based deckbuilding MMORPG.

    2018StrategyAdventureMassively MultiplayerFreeFree to playSimilar games →
  9. 9
    ON&OFF — Steam game cover

    ON&OFF

    Free-to-play alternative to The Nightmare Arena — no purchase or trial window. Shares Strategy with The Nightmare Arena.

    ON&OFF is a turn-based strategy game where you manipulate pieces on a grid to trigger explosive chain reactions. Toggle pieces ON to attack, defend, and heal. Read the enemy's telegraphed intents, unleash powerful skills, and master the board to survive!

    2026StrategyIndieFree To PlayFreeFree to playSimilar games →