Nientum - Op.ZERO

A rhythm action-adventure about restoring a theater through musical performances

QueseraGames · Released Oct 13, 2026

Action Adventure Casual Indie RPG Simulation Sports

Reviews: Very Positive; 99% of 433
Recent reviews: Overwhelmingly Positive; 98% of 267 in 30 days
Players: 70; daily peak, Oct 28, 2026
Steam Deck: Playable
Last update on Steam: 1 day ago; Oct 27, 2026
Minimum PC: HD 5750; 4 GB RAM; Full requirements

What is Nientum - Op.ZERO?

This 2D rhythm action-adventure follows Aleph and Liora, who lose their memories and become a director and actress in a silent theater. Across successive acts, you navigate platforms, solve puzzles, and tune broken notes to reactivate stage devices before staging musical versions of familiar tales. Your choices lead to different endings.

For you if...

+you enjoy dark fantasy and surreal, hand-drawn settings
+you like demanding rhythm challenges rather than relaxed play

Not for you if...

−you prefer song-focused rhythm games with minimal story

What players say

99% of 433 reviews are positive · 98% of 267 in the last 30 days

Players praise the music, characters, and theatrical presentation, especially how the visuals tell the story during songs. Individual criticisms mention limited key bindings, an internet requirement, and difficulty following the plot while concentrating on rhythm inputs.

Screenshots and trailer

Nientum - Op.ZERO system requirements

Minimum: HD 5750, 4 GB RAM.

As published by the developer.

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Minimum

OS: Windows 10 64-bit
Processor: Intel Core i3-2120 | AMD FX-4350.
Graphics: Nvidia GTS 450 | AMD Radeon HD 5750.
Memory: 4 GB RAM

Does Nientum - Op.ZERO have co-op or multiplayer?

No: single-player only, no multiplayer modes declared.

Single-player

Does Nientum - Op.ZERO run on Steam Deck?

Playable Playable: it runs on Steam Deck with some adjustments.

Sometimes shows mouse, keyboard or non-Deck controller icons
Some in-game text is small and may be hard to read
All functionality is accessible with the default controller configuration
Default graphics settings perform well on Steam Deck
Singleplayer gameplay requires active internet connection

PC version details

DRM: None declared on Steam
Controller: Keyboard and mouse
Platforms: Windows
Achievements: 47
Steam features: Family Sharing
Languages: Full audio: Japanese. Text only: English, Korean, Simplified Chinese, Traditional Chinese.

Does Nientum - Op.ZERO use AI-generated content?

No AI-generated content is disclosed on the game's Steam page.

Self-reported by the developer under Steam rules: it covers AI content that ships in the game, not tools used to make it. Steam page checked on Oct 27, 2026. How to filter AI games on Steam