Single-player games like Nientum - Op.ZERO
Below are 9 single-player Steam games similar to Nientum - Op.ZERO, 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 Nientum - Op.ZERO page.
Ranked picks
- 1

KAMITSUBAKI CITY ENSEMBLE
Single-player alternative to Nientum - Op.ZERO — playable solo, no multiplayer required. 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.
- 2

KALPA: Cosmic Symphony
Single-player alternative to Nientum - Op.ZERO — playable solo, no multiplayer required. 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.
- 3

Everhood
Single-player alternative to Nientum - Op.ZERO — playable solo, no multiplayer required. 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.🍄
- 4

Ultimate Drummer
Single-player alternative to Nientum - Op.ZERO — playable solo, no multiplayer required. Shares Action and Adventure with Nientum - Op.ZERO.
Ultimate Drummer is an action-platformer where you play as a lone drummer on a sacred quest to restore harmony to a fractured world. Use a fully playable step-sequencer drum kit to reshape reality, awaken lost musicians, and bring music back to life.
- 5

MASH VP! Re:VISION
Single-player alternative to Nientum - Op.ZERO — playable solo, no multiplayer required. Shares Action and Casual with Nientum - Op.ZERO.
[Fusion, Synthesis, Coalescence]"MASH VP! Re:VISION" is a revolutionary rhythm game that “fuses” two lanes and music into a completely new experience.With a variety of tracks, game modes, and a creativity-driven mashup system, it invites you into a new world of music!
- 6

Starstruck: Hands of Time
Single-player alternative to Nientum - Op.ZERO — playable solo, no multiplayer required. Shares Action and Indie with Nientum - Op.ZERO.
Starstruck: Hands of Time is a story-rich rhythm adventure game where you play guitar and abuse time travel! Control a giant hand destroying a miniature town, or play as the two guitarist kids living in it. For extra fun, optionally plug in a Guitar Hero controller!
- 7

ADEN
Single-player alternative to Nientum - Op.ZERO — playable solo, no multiplayer required. Shares Action with Nientum - Op.ZERO.
Dance, dance, and dance some more! A kawaii side-scrolling dance battle for the new age! Control the mysterious girl Toaka and save the world from destruction!
- 8

Figment
Single-player alternative to Nientum - Op.ZERO — playable solo, no multiplayer required. Shares Action and Indie with Nientum - Op.ZERO.
Figment is an action-adventure game that invites you to explore a unique surreal universe filled with music, humor and multi layered narrative. Join Dusty and his ever-optimistic friend, Piper, on an adventure through the different sides of the mind seeking to restore the courage that's been lost.
- 9

Muse Dash
Single-player alternative to Nientum - Op.ZERO — playable solo, no multiplayer required. Shares Action and Indie with Nientum - Op.ZERO.
Paradise of parkour & rhythm game ★★★ — Muse Dash!!