OPUS: Echo of Starsong - Full Bloom Edition
Profile updated
Adventure indie game OPUS: Echo of Starsong - Full Bloom Edition launched in 2021 from SIGONO Inc, which is also listed as publisher. It has 9,300 Steam reviews with 96% positive sentiment and an initial price of $24.99.
Overview
OPUS: Echo of Starsong - Full Bloom Edition is a 2021 Adventure game developed by SIGONO INC. and published by SIGONO INC.. On Steam it has gathered 9,367 player reviews, 96% of them positive, which counts as a overwhelmingly positive reception among indie titles in the Adventure category. The game is available on mac, windows, and launched at $25. The pairing of developer SIGONO INC. with publisher SIGONO INC. is one of the studio-publisher relationships indielist tracks, letting players find comparable games and letting developers and investors study how Adventure projects reach the market. indielist's white-box method estimates its lifetime sales at roughly 506,000 to 1.2 million units, with the full Boxleiter factor breakdown shown on this page rather than a single black-box figure. Within indielist's catalog of indie games mapped to their studios, publishers, and funding, OPUS: Echo of Starsong - Full Bloom Edition can be compared against similar Adventure titles and benchmarked on review counts and estimated sales.
Reviews
9,367
Positive
96%
Steam appid
1504500
Engine
Unknown
Players (snapshot)
Unavailable
Sales estimate
v1.0506K to 1.2M
units (median: 843K)
≈ $7.2M to $16.8M modeled net revenue (fixed store-cut, refund, and regional-price assumptions applied)
+ - How is this calculated?
| Factor | Adjustment |
|---|---|
| base | +50 |
| year_2021 | +15 |
| price_$25 | +5 |
| positive_96% | +10 |
| genre_Adventure | +10 |
| final NB | 90 |
Heuristic display range: median × [0.6, 1.4]. Boundary protection: NB ∈ [15, 150].
Methodology & limitations
Sales estimates use an additive Boxleiter-derived heuristic against public Steam review
counts. They are not authoritative sales data, and the fixed display range
is not a statistically validated confidence interval. Actual results may fall outside it,
especially for deeply discounted or bundle-heavy titles. Algorithm version
v1.0. Read the exact method and validation status.
indielist estimates lifetime unit sales for OPUS: Echo of Starsong - Full Bloom Edition at roughly 506,000 to 1.2 million copies, with a median around 843,000, derived from its 9,367 Steam reviews using a multi-factor Boxleiter method (version v1.0). That median maps to approximately $12.0M in net revenue after Steam's 30% cut, regional pricing, and refunds. Unlike black-box trackers, the full calculation is shown on this page: a base review-to-sales multiplier is adjusted for release year, launch price, review sentiment, studio size, and genre, and every adjustment is listed so developers, publishers, and investors can audit exactly how the figure was reached. The range itself reflects genuine uncertainty — review-to-sales ratios vary widely between games — so indielist publishes a low, median, and high band rather than a false-precision single number, and treats free-to-play, heavily discounted, and bundle-distributed titles as having wider error margins still.
Price history
27 observed days · window low $9.99Across 27 observed UTC days from 2026-06-26 to 2026-07-22, the daily lowest tracked USD price across stores ranged from $9.99 to $24.99. The tracked-window low was $9.99 on 2026-06-26.
Real store observations · daily lowest tracked USD price across stores · missing days are not filled.
Where to buy
Affiliate disclosureLatest tracked store observations (2026-07-22 10:39 UTC), cheapest first. Prices may have changed since observation. Some are affiliate links — we may earn a commission at no extra cost to you. Learn more.
Platforms
macwindows
Genres
AdventureIndie
Frequently asked questions
- How many copies has OPUS: Echo of Starsong - Full Bloom Edition sold?
- indielist estimates OPUS: Echo of Starsong - Full Bloom Edition has sold between 505,818 and 1,180,242 units (median 843,030), derived from its 9,367 Steam reviews with the white-box Boxleiter v1.0 method. The full breakdown is shown on the page.
- Who developed OPUS: Echo of Starsong - Full Bloom Edition?
- OPUS: Echo of Starsong - Full Bloom Edition was developed by SIGONO INC. and published by SIGONO INC..
- Who published OPUS: Echo of Starsong - Full Bloom Edition?
- OPUS: Echo of Starsong - Full Bloom Edition was published by SIGONO INC., developed by SIGONO INC.. See SIGONO INC.'s full catalogue and submission status on indielist.
- When was OPUS: Echo of Starsong - Full Bloom Edition released?
- OPUS: Echo of Starsong - Full Bloom Edition was released in 2021.
- How many reviews does OPUS: Echo of Starsong - Full Bloom Edition have on Steam?
- OPUS: Echo of Starsong - Full Bloom Edition has 9,367 Steam reviews, of which 96% are positive.
- Is OPUS: Echo of Starsong - Full Bloom Edition worth playing?
- Steam players rate OPUS: Echo of Starsong - Full Bloom Edition 96% positive across 9,367 reviews. indielist doesn't score games editorially; it surfaces public review sentiment and a white-box sales estimate so you can judge reception and reach yourself.
Ecosystem
Players looking for games like OPUS: Echo of Starsong - Full Bloom Edition can compare it on indielist against semantically similar Adventure titles such as Subnautica, Raft, Satisfactory, Human Fall Flat, ranked by shared tags and genre rather than by ad spend. On the developer side, SIGONO INC.'s other releases and SIGONO INC.'s wider catalog are one click away, letting developers benchmark where OPUS: Echo of Starsong - Full Bloom Edition sits among a studio's body of work and how its publisher's portfolio performs. Because indielist maps studios, publishers, games, and funding into one connected graph, the same OPUS: Echo of Starsong - Full Bloom Edition page serves three audiences at once: players hunting their next Adventure game, developers studying how comparable projects were positioned and what they sold, and investors tracing which teams and labels are active in the space. A machine-readable markdown mirror of this page is published at the same path with a .md suffix for AI assistants, and its review, price, and sales-estimate figures are refreshed on a schedule rather than frozen at launch.
You might also like
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- R
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- S
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- H
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- S
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- D
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