QueseraGames announced Nientum – Op.ZERO The full version (Ver 1.0) will be available at Steam on October 14, 2026. The game was previously available in Early Access. QueseraGames is an independent game studio based in South Korea.
Rhythm-Action on the Theater Stage
Nientum – Op.ZERO takes players to a forgotten old theater. The stage, the music, and the applause have long lain dormant in the darkness. Behind the scenes, two girls awaken with no memory. Aleph takes the director’s chair. Liora steps onto the stage. Only Liora’s voice can raise the theater’s curtain once more.
Nientum – Op.ZERO is a 2D rhythm-action adventure game. Each level serves as a performance. Players run behind the scenes, step into the spotlight, and experience the story through rhythm. Boss fights are presented as duets won through precise rhythm. Every stage that’s restored brings the theater back to life. The player’s choices determine the story’s ending.
The main characters are voiced entirely by Japanese voice actors:
- Aleph (Voiced by Chika Anzai)
- Liora (Voiced by Yuki Takada)
- Mordred (Voiced by Takehito Koyasu)
This game features more than 30 songs and over 10 story chapters. The total playtime for the main story exceeds 12 hours. The music was composed by Kagetora, Halv, seatrus, and other composers from Korea, Japan, and other countries. Since Early Access began on November 24, 2025, the game has earned a “Very Positive” rating on Steam, with 98 percent positive reviews out of 156 reviews.
What's New in Version 1.0
Version 1.0 adds Chapters 6 through 10 to the main story. One additional chapter unlocks after the player completes the main story. Free Play Mode gets 20 new songs. The song titles and composers involved will be announced via the official X account prior to launch.
Version 1.0 also introduces new features. The "Collection" feature allows players to browse the story mode’s collection. Every story track now has a "Hard" difficulty level. A "scene skip" feature has also been added.
Mobile Version Under Development
QueseraGames is developing mobile versions for iOS and Android. These mobile versions are scheduled for simultaneous release on October 14, 2026. Full details will be announced on September 1, 2026.
Nientum – Op.ZERO to Be Featured at the Tokyo Game Show 2026
Nientum – Op.ZERO has been selected for the SELECTED INDIE 80 at the Tokyo Game Show 2026. Visitors can try the game firsthand at the booth. Further details will be announced in early September.
Even before being selected for the Tokyo Game Show 2026, Nientum – Op.ZERO had already received a number of accolades. The game won the Excellence in Audio award at the 2024 BIC (Busan Indie Connect Festival). Nientum – Op.ZERO also took second place in the Audience Choice Award at gamescom asia 2024 and was selected for the 2024 Google Indie Games Accelerator.
Nientum – Op.ZERO is a game from QueseraGames, the studio that previously developed the rhythm game KALPA—which has over 1.7 million downloads worldwide—as well as KALPA: Cosmic Symphony for Steam. With a story that’s taking shape and a mobile version currently in the works, Nientum – Op.ZERO is poised to reach even more new players after October 14, 2026.
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Festival game This event—the largest of its kind in Asia—is about to celebrate its 30th anniversary and promises a scale unlike any previous years. Under the theme “The Longest Five Days of Nonstop Play,” this year’s event will make history. For the first time, the exhibition will run for a full five days.-
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Trailer Release Date
