IMHO.

Single-player games like Undungeon Arena

Below are 9 single-player Steam games similar to Undungeon Arena, ranked by player overlap. Every pick carries Steam's Single-player category, so multiplayer-only titles or always-online games don't sneak in. imho.run pulls the category data from Steam directly — Single-player here matches what the store labels.

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

Ranked picks

  1. 1
    Brother Brother — Steam game cover

    Brother Brother

    Single-player alternative to Undungeon Arena — playable solo, no multiplayer required. Shares Action and Indie with Undungeon Arena.

    You awake in a small world, in the small house that you share with your brother. His bed is cold and empty, and there’s no sign of his whereabouts. Something doesn’t feel right. Explore the land and gear up, finding your brother is going to be no walk in the park.

    2019ActionIndieAdventureFreeSingle-playerSimilar games →
  2. 2
    RymdResa — Steam game cover

    RymdResa

    Single-player alternative to Undungeon Arena — playable solo, no multiplayer required. Shares Indie and Adventure with Undungeon Arena.

    A relaxed roguelike space odyssey in a procedurally generated universe! Travel through a lonely and mysterious cosmos. Customize your ship, explore and survive!

    2015IndieAdventureRPG11.99 USDDeck PlayableSingle-playerSimilar games →
  3. 3
    Convoy — Steam game cover

    Convoy

    Single-player alternative to Undungeon Arena — playable solo, no multiplayer required. Shares Action and Indie with Undungeon Arena.

    Convoy is a tactical roguelike-like inspired by Mad Max and FTL in which you cross a wasteland in search of parts for your broken ship. Presented in pixel art and set in a future post-apocalyptic setting, Convoy is a squad based tactical combat roguelike-like in its core.

    2015ActionStrategyIndie14.99 USDDeck PlayableSingle-playerSimilar games →
  4. 4
    Hero Siege — Steam game cover

    Hero Siege

    Single-player alternative to Undungeon Arena — playable solo, no multiplayer required. Shares Action and Indie with Undungeon Arena.

    Hero Siege is a fast paced Pixel Art ARPG featuring an expansive roster of unique classes, deep build experimentation, and a player driven economy.

    2014ActionIndieAdventure7.99 USDDeck PlayableSingle-playerSimilar games →
  5. 5
    Halls of Torment — Steam game cover

    Halls of Torment

    Single-player alternative to Undungeon Arena — playable solo, no multiplayer required. Shares Action and Indie with Undungeon Arena.

    Slay hordes of terrifying monsters in this horde survival roguelite. Descend into the Halls of Torment where the Lords of the underworld await you. Treasures, magical trinkets, and a growing cast of heroes will grant you the power to vanquish these horrors from beyond. How long can you survive?

    2024ActionIndieRPG6.66 USDDeck VerifiedSingle-playerSimilar games →
  6. 6
    Children of Morta — Steam game cover

    Children of Morta

    Single-player alternative to Undungeon Arena — playable solo, no multiplayer required. Shares Action and Indie with Undungeon Arena.

    Children of Morta is a story-driven action RPG game about an extraordinary family of heroes. Lead the Bergsons, with all their flaws and virtues, against the forthcoming Corruption. Will you be able to sacrifice everything to save the ones you care for?

    2019ActionIndieAdventure21.99 USDDeck VerifiedSingle-playerSimilar games →
  7. 7
    Heroes of Hammerwatch II — Steam game cover

    Heroes of Hammerwatch II

    Single-player alternative to Undungeon Arena — playable solo, no multiplayer required. Shares Action and Indie with Undungeon Arena.

    A rogue-lite action-rpg that offers extensive persistent progression. Build your town, upgrade and equip your heroes, before taking on the ever-changing Dark Citadel - either solo or with a team of friends.

    2025ActionIndieRPG19.99 USDDeck PlayableSingle-playerSimilar games →
  8. 8
    Deflector — Steam game cover

    Deflector

    Single-player alternative to Undungeon Arena — playable solo, no multiplayer required. Shares Action and Indie with Undungeon Arena.

    Deflector is a top down action rogue-lite set in a deadly microcosm. Dive deep into hostile worlds teeming with viruses. Strike down increasingly challenging enemies with your weapons and their own deflected projectiles. Live, die, grow stronger and become powerful enough to reach the Source!

    2023ActionIndieAdventure19.99 USDDeck VerifiedSingle-playerSimilar games →
  9. 9
    Undungeon — Steam game cover

    Undungeon

    Single-player alternative to Undungeon Arena — playable solo, no multiplayer required. Shares Action and Indie with Undungeon Arena.

    Undungeon is a gorgeous Action/RPG driven by intense real-time combat and an immensely rich science fiction story. Travel between dimensions and change the world around you in an attempt to reconstruct the shattered Multiverse.

    2021ActionIndieAdventure3.99 USDDeck PlayableSingle-playerSimilar games →