IMHO.

Games like Nientum - Op.ZERO

If Nientum - Op.ZERO is your kind of game, the closest matches are Hemomancer, KAMITSUBAKI CITY ENSEMBLE and Everhood — picked from the ranked list below. Reviewers single out its beautiful and memorable soundtrack, atmospheric and contemplative. Each pick is ranked by what players of this game also play, shared genres and tags, and review-mined similarity — not a generic popularity list.

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About Nientum - Op.ZERO: A 2D action-adventure where the story unfolds by tuning the stage with music. A play by Aleph and Liora, who have lost their memories. A beautiful yet eerie stage, and the secret of the forgotten theater await. Your choices will determine the play's ending — and their fates.

2025ActionSportsIndieAdventureSimulationRPG19.99 USDDeck PlayableWindowsby QueseraGames
Nientum - Op.ZERO — Steam game cover
Players highlight
Beautiful and memorable soundtrackCollectibles unlock hidden story elementsDual perspective gameplay alternates between director and performerAtmosphericContemplativeEmotional

Players who liked Nientum - Op.ZERO also play

Steam players who put hours into Nientum - Op.ZERO also tend to own these titles — a signal called collaborative filtering. imho.run cross-references millions of library ownership patterns to surface games whose real audiences overlap, regardless of whether their genre tags match.

  1. Hemomancer

    WHY THIS

    Top pick for Nientum - Op.ZERO fans by collaborative filtering across millions of Steam libraries. Shares Action and Indie with Nientum - Op.ZERO.

    A rhythm-enhanced action roguelite RPG with visual novel storytelling. Unravel a story in a surreal world shaped by music, collect trinkets attuned to rhythm, furnish the abyss and make questionable allies. Run with scissors, talk to strangers and make decisions you don’t fully understand.

    ActionIndieAdventureSteam ↗
  2. KAMITSUBAKI CITY ENSEMBLE

    WHY THIS

    Shares rhythm game, checkpoint based progression, story heavy and an atmospheric mood with Nientum - Op.ZERO.

    Second-strongest match for Nientum - Op.ZERO fans by collaborative filtering across millions of Steam libraries. Shares Action and Sports with Nientum - Op.ZERO.

    "KAMITSUBAKI CITY ENSEMBLE" is a rhythm game in which AI girls who were awoken after the apocalypse use special song magic to create melodies with you, in an effort to restart the world. How did the destruction happen? Why do these girls exist? All answers will be revealed...when the music stops.

    2024ActionSportsIndie3.99 USDDeck PlayableSteam ↗
  3. Everhood

    WHY THIS

    Shares an atmospheric mood with Nientum - Op.ZERO.

    Third-strongest match for Nientum - Op.ZERO fans by collaborative filtering across millions of Steam libraries. Shares Action and Indie with Nientum - Op.ZERO.

    An UNCONVENTIONAL ADVENTURE RPG that takes place in an inexpressible world filled with amusing musical battles and strange delightful encounters. To put it simply: You are in for a ride.🍄

    2021ActionIndieAdventure9.99 USDDeck VerifiedSteam ↗
  4. Teenage Blob

    WHY THIS

    Ranked #4 for Nientum - Op.ZERO fans by collaborative filtering across millions of Steam libraries. Shares Action and Indie with Nientum - Op.ZERO.

    Half game. Half album. All awesome! A colourful art-punk adventure towards the best night of your life. Guaranteed to cheer you up in half an hour or your money back!

    2020ActionIndieAdventure7.99 USDSteam ↗
  5. Saviorless

    WHY THIS

    Shares an atmospheric mood with Nientum - Op.ZERO.

    Ranked #5 for Nientum - Op.ZERO fans by collaborative filtering across millions of Steam libraries. Shares Action and Indie with Nientum - Op.ZERO.

    Embark on a journey to The Smiling Islands, the realm of the Saviors, where an enigmatic guide beckons. The seasoned narrator has shared this story countless times, yet none have graced the miraculous land. Can you seize your narrative and ascend as a Savior?

    2024ActionIndieAdventure12.99 USDDeck VerifiedSteam ↗
  6. ATONE: Heart of the Elder Tree

    WHY THIS

    Shares an atmospheric mood with Nientum - Op.ZERO.

    Ranked #6 for Nientum - Op.ZERO fans by collaborative filtering across millions of Steam libraries. Shares Action and Indie with Nientum - Op.ZERO.

    ATONE is a Norse mythology-inspired, hand-drawn game that blends interactive storytelling and complex puzzles with a rhythm game combat system. Inherit the role of a young warrior named Estra as she journeys through Midgard to unveil the truth behind her father’s death.

    2023ActionIndieAdventure14.99 USDDeck VerifiedSteam ↗
  7. The Bridge

    WHY THIS

    Shares an atmospheric mood with Nientum - Op.ZERO.

    Ranked #7 for Nientum - Op.ZERO fans by collaborative filtering across millions of Steam libraries. Shares Indie and Adventure with Nientum - Op.ZERO.

    The Bridge is a logic puzzle game that forces you to reevaluate your preconceptions of physics and perspective. It is Isaac Newton meets M. C. Escher. Manipulate gravity to redefine the ceiling as the floor while venturing through impossible architectures.

    2013StrategyIndieAdventure9.99 USDDeck VerifiedSteam ↗
  8. KALPA: Cosmic Symphony

    WHY THIS

    Shares rhythm game, visual novel style and atmospheric with Nientum - Op.ZERO.

    Ranked #8 for Nientum - Op.ZERO fans by collaborative filtering across millions of Steam libraries. Shares Action and Sports with Nientum - Op.ZERO.

    A next-generation rhythm game where story and music intertwine. Enjoy a tracklist filled with famous licensed songs and exclusive original songs made by renowned composers Discover an immersive story, and face endless challenges. Your performance will dictate the fate of the world.

    2025ActionSportsIndie19.99 USDDeck PlayableSteam ↗

Cheaper alternatives

Games in the same vein priced at least 40% below Nientum - Op.ZERO at current Steam store prices.

  1. Terraria

    WHY THIS

    Priced ~50% under Nientum - Op.ZERO on Steam right now. Shares Action and Indie with Nientum - Op.ZERO.

    Dig, fight, explore, build! Nothing is impossible in this action-packed adventure game. Four Pack also available!

    2011ActionIndieAdventure9.99 USDDeck VerifiedSteam ↗
  2. Garry's Mod

    WHY THIS

    Priced ~75% under Nientum - Op.ZERO on Steam right now. Shares Indie and Simulation with Nientum - Op.ZERO.

    Garry's Mod is a physics sandbox. There aren't any predefined aims or goals. We give you the tools and leave you to play.

    2006IndieSimulationCasual4.99 USDDeck PlayableSteam ↗
  3. Lethal Company

    WHY THIS

    Priced ~50% under Nientum - Op.ZERO on Steam right now. Shares Action and Indie with Nientum - Op.ZERO.

    A co-op horror about scavenging at abandoned moons to sell scrap to the Company.

    2023ActionIndieAdventure9.99 USDDeck PlayableSteam ↗
  4. Left 4 Dead 2

    WHY THIS

    Priced ~50% under Nientum - Op.ZERO on Steam right now. Shares Action with Nientum - Op.ZERO.

    Set in the zombie apocalypse, Left 4 Dead 2 is a co-operative action horror FPS takes you and your friends through the cities, swamps and cemeteries of the Deep South, from Savannah to New Orleans across five expansive campaigns.

    2009Action9.99 USDDeck VerifiedSteam ↗
  5. People Playground

    WHY THIS

    Priced ~50% under Nientum - Op.ZERO on Steam right now. Shares Action and Indie with Nientum - Op.ZERO.

    Shoot, stab, burn, poison, tear, vaporise, or crush ragdolls in a large open space.

    2019ActionIndieSimulation9.99 USDDeck PlayableSteam ↗
  6. Portal 2

    WHY THIS

    Priced ~50% under Nientum - Op.ZERO on Steam right now. Shares Action and Adventure with Nientum - Op.ZERO.

    The "Perpetual Testing Initiative" has been expanded to allow you to design co-op puzzles for you and your friends!

    2011ActionAdventure9.99 USDDeck VerifiedSteam ↗
  7. Fallout: New Vegas

    WHY THIS

    Priced ~50% under Nientum - Op.ZERO on Steam right now. Shares Action and RPG with Nientum - Op.ZERO.

    Welcome to Vegas. New Vegas. Enjoy your stay!

    2010ActionRPG9.99 USDDeck PlayableSteam ↗
  8. Undertale

    WHY THIS

    Priced ~50% under Nientum - Op.ZERO on Steam right now. Shares Indie and RPG with Nientum - Op.ZERO.

    UNDERTALE! The RPG game where you don't have to destroy anyone.

    2015IndieRPG9.99 USDDeck PlayableSteam ↗

Free alternatives

Free-to-play games that recommended players of this title also tend to enjoy.

  1. Doki Doki Literature Club!

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Indie and Casual with Nientum - Op.ZERO.

    The Literature Club is full of cute girls! Will you write the way into their heart? This game is not suitable for children or those who are easily disturbed.

    2017IndieFree To PlayCasualFreeDeck PlayableSteam ↗
  2. Life is Strange - Episode 1

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Action and Adventure with Nientum - Op.ZERO.

    Episode 1 now FREE! Life is Strange is an award-winning and critically acclaimed episodic adventure game that allows the player to rewind time and affect the past, present and future.

    2015ActionAdventureFreeDeck PlayableSteam ↗
  3. Helltaker

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Indie and Adventure with Nientum - Op.ZERO.

    Helltaker is a short game about sharply dressed demon girls.

    2020IndieAdventureFree To PlayFreeDeck PlayableSteam ↗
  4. Ultimate Custom Night

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Action and Indie with Nientum - Op.ZERO.

    Welcome to the ultimate FNAF mashup, featuring 50 selectable characters and custom difficulties!

    2018ActionIndieFree To PlayFreeSteam ↗
  5. ENA: Dream BBQ

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Indie and Adventure with Nientum - Op.ZERO.

    Experience surreal environments and inexplicable characters as ENA in a new wild world.

    2025IndieAdventureFreeDeck VerifiedSteam ↗
  6. The Murder of Sonic the Hedgehog

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Indie and Simulation with Nientum - Op.ZERO.

    Sonic the Hedgehog...was murdered!? Get to the bottom of the mystery in this brand-new adventure!

    2023IndieSimulationFree To PlayFreeDeck PlayableSteam ↗
  7. Indigo Park: Chapter 1

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Action and Indie with Nientum - Op.ZERO.

    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 PlayableSteam ↗
  8. missed messages.

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Indie and Simulation with Nientum - Op.ZERO.

    ‘goth gf’s iPhone’ airdrops you - accept or decline? A love/horror story about life, death, & memes.

    2019IndieSimulationFree To PlayFreeDeck PlayableSteam ↗

Plays great on Steam Deck

Valve-Verified or Playable picks from the similar pool — ready to go on Deck out of the box.

  1. Everhood

    WHY THIS

    Shares an atmospheric mood with Nientum - Op.ZERO.

    Deck Verified — runs on Steam Deck out of the box. Shares Action and Indie with Nientum - Op.ZERO.

    An UNCONVENTIONAL ADVENTURE RPG that takes place in an inexpressible world filled with amusing musical battles and strange delightful encounters. To put it simply: You are in for a ride.🍄

    2021ActionIndieAdventure9.99 USDDeck VerifiedSteam ↗
  2. Saviorless

    WHY THIS

    Shares an atmospheric mood with Nientum - Op.ZERO.

    Deck Verified — runs on Steam Deck out of the box. Shares Action and Indie with Nientum - Op.ZERO.

    Embark on a journey to The Smiling Islands, the realm of the Saviors, where an enigmatic guide beckons. The seasoned narrator has shared this story countless times, yet none have graced the miraculous land. Can you seize your narrative and ascend as a Savior?

    2024ActionIndieAdventure12.99 USDDeck VerifiedSteam ↗
  3. ATONE: Heart of the Elder Tree

    WHY THIS

    Shares an atmospheric mood with Nientum - Op.ZERO.

    Deck Verified — runs on Steam Deck out of the box. Shares Action and Indie with Nientum - Op.ZERO.

    ATONE is a Norse mythology-inspired, hand-drawn game that blends interactive storytelling and complex puzzles with a rhythm game combat system. Inherit the role of a young warrior named Estra as she journeys through Midgard to unveil the truth behind her father’s death.

    2023ActionIndieAdventure14.99 USDDeck VerifiedSteam ↗
  4. The Bridge

    WHY THIS

    Shares an atmospheric mood with Nientum - Op.ZERO.

    Deck Verified — runs on Steam Deck out of the box. Shares Indie and Adventure with Nientum - Op.ZERO.

    The Bridge is a logic puzzle game that forces you to reevaluate your preconceptions of physics and perspective. It is Isaac Newton meets M. C. Escher. Manipulate gravity to redefine the ceiling as the floor while venturing through impossible architectures.

    2013StrategyIndieAdventure9.99 USDDeck VerifiedSteam ↗

Frequently asked about Nientum - Op.ZERO

Does Nientum - Op.ZERO run on Steam Deck?
Nientum - Op.ZERO is rated Playable on Steam Deck — it runs, but expect some manual adjustments (control remapping, text size, or graphics settings) for the best experience.
How much does Nientum - Op.ZERO cost?
Nientum - Op.ZERO is listed on Steam at 19.99 USD (current store price; Steam sales may reduce this temporarily).
What games are most similar to Nientum - Op.ZERO?
Based on Steam play patterns and shared genres/tags, the games most often recommended alongside Nientum - Op.ZERO are Hemomancer, KAMITSUBAKI CITY ENSEMBLE, Everhood.
Who developed Nientum - Op.ZERO?
Nientum - Op.ZERO was developed by QueseraGames.

imho.run ranks Steam game alternatives using a mix of collaborative filtering (ALS / iALS / EASE / LightGCN), content scoring over genres, categories, Steam tags, developers, and publishers, plus AI-extracted vibes mined from review text. The page above is generated in seed mode anchored on Nientum - Op.ZERO.

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