IMHO.

Single-player games like Summum Aeterna

Below are 13 single-player Steam games similar to Summum Aeterna, 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 Summum Aeterna page.

Ranked picks

  1. 1
    Dead Cells — Steam game cover

    Dead Cells

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

    Dead Cells is a roguelite, metroidvania inspired, action-platformer. You'll explore a sprawling, ever-changing castle... assuming you’re able to fight your way past its keepers in 2D souls-lite combat. No checkpoints. Kill, die, learn, repeat.

    2018ActionIndieAdventure24.99 USDDeck VerifiedSingle-playerSimilar games →
  2. 2
    Dunjungle — Steam game cover

    Dunjungle

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

    A 2d action-packed roguelite about a monkey hero protecting the jungle from the rise of a corruptive power. Explore ever-changing dungeons, fight weird enemies and gear up with lots of weapons and relics you can combine for a new experience every run. Explore, fight, die, and repeat!

    2025ActionIndieAdventure14.99 USDDeck VerifiedSingle-playerSimilar games →
  3. 3
    GetsuFumaDen: Undying Moon — Steam game cover

    GetsuFumaDen: Undying Moon

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

    Death is not the end: defeat infernal foes until you die and carry on the fight with your eternal soul and memories in a new body!

    2022ActionIndie14.99 USDDeck VerifiedSingle-playerSimilar games →
  4. 4
    Ninja Soul — Steam game cover

    Ninja Soul

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

    Ninjasoul is a platform action game that combines roguelite with Galaxy warrior demon city. Kunoichi, Tachibana Yachiyo unexpectedly awakened the ability of "death backtracking". She will find the truth in the land that used to be her hometown in the fight and death again and again.

    2022ActionIndieAdventure9.99 USDSingle-playerSimilar games →
  5. 5
    Devil Slayer - Raksasi — Steam game cover

    Devil Slayer - Raksasi

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

    Devil Slayer - Raksasi is a top-down action game with procedurally generated dungeons, profound roguelike elements, and intuitive soul-like fighting. It's a fair and challenging game, dodging, timing, striking, you need to master them all to fight your way out of this cursed world.

    2021ActionIndieAdventure10.49 USDDeck VerifiedSingle-playerSimilar games →
  6. 6
    Seed Hunter 猎源 — Steam game cover

    Seed Hunter 猎源

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

    Seed Hunter is a 2D Platformer with Roguelite element. You’re the alien finding the missing source around universe, but you get into some trouble on the planet of Earth.

    2020ActionIndieAdventure1.07 USDDeck PlayableSingle-playerSimilar games →
  7. 7
    ScourgeBringer — Steam game cover

    ScourgeBringer

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

    ScourgeBringer is a fast-paced free-moving roguelite platformer. Help Kyhra to explore the unknown and slash her way through ancient machines guarding the seal of her past, and maybe the redemption of humanity.

    2020ActionIndieAdventure16.99 USDDeck VerifiedSingle-playerSimilar games →
  8. 8
    Dreamscaper — Steam game cover

    Dreamscaper

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

    By night, delve deep into your subconscious and discover powerful artifacts to conquer your nightmares. By day, explore the city of Redhaven and build relationships to unlock the power of your dreams. DREAM. DIE. WAKE. REPEAT.

    2021ActionIndieAdventure24.99 USDDeck VerifiedSingle-playerSimilar games →
  9. 9
    Rogue Legacy — Steam game cover

    Rogue Legacy

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

    Rogue Legacy is a genealogical rogue-"LITE" where anyone can be a hero. Each time you die, your child will succeed you. Every child is unique. One child might be colorblind, another might be a dwarf with vertigo. But that's OK, because no one is perfect, and you don't have to be to succeed.

    2013ActionIndieAdventure14.99 USDDeck VerifiedSingle-playerSimilar games →
  10. 10
    Hades — Steam game cover

    Hades

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

    Defy the god of the dead as you hack and slash out of the Underworld in this rogue-like dungeon crawler from the creators of Bastion, Transistor, and Pyre.

    2020ActionIndieRPG24.99 USDDeck VerifiedSingle-playerSimilar games →
  11. 11
    Aeterna Noctis — Steam game cover

    Aeterna Noctis

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

    Aeterna Noctis is a challenging metroidvania that majestically combines action, exploration and adventure. With 2 game modes and difficulty based on action or the exclusive Noctis mode where a level of difficulty is added in precision platforming never seen in the metroidvania genre.

    2021ActionIndieAdventure29.99 USDDeck VerifiedSingle-playerSimilar games →
  12. 12
    Eden Genesis — Steam game cover

    Eden Genesis

    Single-player alternative to Summum Aeterna — playable solo, no multiplayer required. Shares Action and Adventure with Summum Aeterna.

    Help Leah overcome a serious illness caused by her cybernetic implants. In this a platformer from the creators of Aeterna Noctis, you will face hundreds of challenges and secrets that unravel the mystery of Eden Genesis. Live this Cyberpunk 2D adventure.

    2024ActionAdventure24.99 USDDeck VerifiedSingle-playerSimilar games →
  13. 13
    Genesis Survivors — Steam game cover

    Genesis Survivors

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

    Welcome, hackers, you're being transferred to Eden City to defend its citizens against the alien threat! Eden Survivors is a single-player survivor-like auto-shooter where players must defeat hordes of alien invaders until the extraction time.

    2024ActionIndieRPG4.99 USDDeck PlayableSingle-playerSimilar games →