SIGONO INC.

Profile updated Jun 2026

SIGONO INC. is the developer behind OPUS: Echo of Starsong - Full Bloom Edition, with 2 titles on Steam and 10,221 total reviews. SIGONO INC. games on indielist also include OPUS: Prism Peak, and the studio’s dominant genre is Adventure, placing it among Adventure developers.

SIGONO INC. is an indie game studio. indielist tracks 4 titles by SIGONO INC., together holding 13,155 Steam reviews. Its most-reviewed game is OPUS: Echo of Starsong - Full Bloom Edition, which holds 9,367 Steam reviews (2021). Across its catalog the studio has worked with 2 publishers, including SIGONO INC. and SHUEISHA GAMES. indielist tracks releases from SIGONO INC. starting in 2016. That averages about 3,289 Steam reviews per title. This profile sits inside indielist's relationship graph of studios, publishers, and games, so players can find more titles from the same team, developers can compare portfolios and team sizes against peers, and investors can trace which publishers and genres the studio works across. Where Steam review data is available, indielist also publishes a transparent, white-box sales estimate for each of the studio's games, showing the full Boxleiter factor breakdown rather than a single black-box number, so the commercial picture behind SIGONO INC. can be audited rather than taken on trust.

Across its 4 tracked titles released between 2016 and 2026, SIGONO INC. has accumulated 13,155 Steam reviews, an average of about 3,300 per game, and its most-reviewed entries are OPUS: Echo of Starsong - Full Bloom Edition, OPUS: Rocket of Whispers, OPUS: The Day We Found Earth, OPUS: Prism Peak. Review counts are the most reliable public proxy indielist has for an indie studio's reach, since raw sales are almost never disclosed, so this spread is a fair snapshot of how widely the studio's work has landed. Developers can read these figures as a benchmark: a studio of this output and review volume is a useful reference point when projecting where a comparable project might end up, and indielist shows the white-box sales estimate behind every one of those titles, so the comparison rests on visible Boxleiter math, factor by factor, rather than on a reputation or a single black-box number.

On the business side, SIGONO INC. has shipped with 2 publishers (SIGONO INC. and SHUEISHA GAMES), and indielist maps each of those relationships as an edge in its studio-to-publisher-to-game graph. That matters to two audiences in particular: an investor can trace which labels have backed this studio and how that roster has changed over time, while a developer can see which publishers are already comfortable signing work in the studio's genres before deciding where to send a pitch. This is the kind of sourcing intelligence that is slow and tedious to reconstruct from Steam store pages alone, because the storefront never exposes who introduced whom. Each linked publisher page in turn lists its full roster, deal tier, and current submission status, so the network around SIGONO INC. can be walked outward in either direction rather than read as a flat, disconnected list.