The Game Census
OPUS: Rocket of Whispers cover art

OPUS: Rocket of Whispers

SIGONO INC. · 2018-02-07

SteamGOG

AdventureIndie

Modes: Single player · Perspectives: Third person

Releases: Feb 07, 2018 (PC (Microsoft Windows)), Feb 07, 2018 (Mac), Sep 14, 2017 (Android), Mar 22, 2018 (Nintendo Switch), Sep 14, 2017 (iOS)

Rocket of Whispers is an award-winning post-apocalyptic adventure that follows two survivors on a journey to launch a space burial for the lost souls of their desolate world. Help them search the snowy wasteland for supplies and the courage to say goodbye.

OPUS: Rocket of Whispers is an Adventure and Indie game released in 2018, priced at $14.99, with an owner estimate of 200,000 .. 500,000 and a review sentiment of Very Positive (92% of 1715 reviews).

2
playing now
92%
positive of 1.7k reviews
Very Positive
steam's rating (official)
200,000–500,000
owners (SteamSpy est.)
60/100
IGDB user rating (10 ratings)
platinum
deck/linux tier (ProtonDB)
Playable
Steam Deck (Valve)
SteamOS: Playable
$14.99
steam price (US)

2 players in-game as of 2026-10-14 13:00 UTC (census sample)

Opus: Rocket of Whispers is a 2D adventure game developed by Taiwanese independent studio SIGONO. It is the second installment of the Opus series that began with Opus: The Day We Found Earth, and focuses on story and exploration, much like its predecessor. It was continued with Opus: Echo of Starsong.

Health check

Quietly active
  • · 2 players in-game at the last census sample.
  • · 85 reviews in the last 8 weeks (~11/week).
  • · Review velocity up 39% vs the prior 8 weeks.
  • · Top 10% of 28,739 Adventure games in the census by review count.

Health tier since 2026-08-30

Estimated sales: 43k–103k copies

Review-multiple estimate from 1,717 total reviews — how this is computed.

Current store prices

GOG$2.25-75%

Deal snapshots via CheapShark, refreshed daily.

All-time low: $1.00 at Fanatical (2021-05-14) · bundled 5×via IsThereAnyDeal

12-month high $14.99 · on sale 77 of 84 observed days · $1.25 above the all-time low (census price snapshots)

Review momentum

PositiveNegative
10310320182026Week of 2018-02-01: 103 positiveWeek of 2018-02-01: 4 negativeWeek of 2018-03-01: 29 positiveWeek of 2018-03-01: 4 negativeWeek of 2018-04-01: 13 positiveWeek of 2018-04-01: 2 negativeWeek of 2018-05-01: 11 positiveWeek of 2018-06-01: 23 positiveWeek of 2018-07-01: 9 positiveWeek of 2018-07-01: 6 negativeWeek of 2018-08-01: 10 positiveWeek of 2018-08-01: 1 negativeWeek of 2018-09-01: 24 positiveWeek of 2018-09-01: 3 negativeWeek of 2018-10-01: 11 positiveWeek of 2018-10-01: 1 negativeWeek of 2018-11-01: 17 positiveWeek of 2018-11-01: 1 negativeWeek of 2018-12-01: 11 positiveWeek of 2018-12-01: 1 negativeWeek of 2019-01-01: 9 positiveWeek of 2019-01-01: 2 negativeWeek of 2019-02-01: 10 positiveWeek of 2019-03-01: 9 positiveWeek of 2019-04-01: 8 positiveWeek of 2019-04-01: 1 negativeWeek of 2019-05-01: 5 positiveWeek of 2019-05-01: 3 negativeWeek of 2019-06-01: 11 positiveWeek of 2019-06-01: 2 negativeWeek of 2019-07-01: 16 positiveWeek of 2019-07-01: 3 negativeWeek of 2019-08-01: 2 positiveWeek of 2019-09-01: 1 negativeWeek of 2019-10-01: 3 positiveWeek of 2019-11-01: 14 positiveWeek of 2019-12-01: 4 positiveWeek of 2019-12-01: 2 negativeWeek of 2020-01-01: 8 positiveWeek of 2020-02-01: 10 positiveWeek of 2020-02-01: 1 negativeWeek of 2020-03-01: 11 positiveWeek of 2020-03-01: 2 negativeWeek of 2020-04-01: 5 positiveWeek of 2020-04-01: 1 negativeWeek of 2020-05-01: 3 positiveWeek of 2020-06-01: 6 positiveWeek of 2020-07-01: 13 positiveWeek of 2020-07-01: 2 negativeWeek of 2020-08-01: 16 positiveWeek of 2020-08-01: 1 negativeWeek of 2020-09-01: 1 positiveWeek of 2020-10-01: 7 positiveWeek of 2020-11-01: 4 positiveWeek of 2020-11-01: 1 negativeWeek of 2020-12-01: 6 positiveWeek of 2020-12-01: 1 negativeWeek of 2021-01-01: 7 positiveWeek of 2021-02-01: 9 positiveWeek of 2021-03-01: 5 positiveWeek of 2021-03-01: 1 negativeWeek of 2021-04-01: 5 positiveWeek of 2021-05-01: 6 positiveWeek of 2021-05-01: 1 negativeWeek of 2021-06-01: 9 positiveWeek of 2021-07-01: 21 positiveWeek of 2021-07-01: 1 negativeWeek of 2021-08-01: 18 positiveWeek of 2021-09-01: 25 positiveWeek of 2021-09-01: 2 negativeWeek of 2021-10-01: 13 positiveWeek of 2021-11-01: 29 positiveWeek of 2021-11-01: 2 negativeWeek of 2021-12-01: 25 positiveWeek of 2021-12-01: 3 negativeWeek of 2022-01-01: 39 positiveWeek of 2022-01-01: 4 negativeWeek of 2022-02-01: 34 positiveWeek of 2022-02-01: 1 negativeWeek of 2022-03-01: 17 positiveWeek of 2022-03-01: 1 negativeWeek of 2022-04-01: 11 positiveWeek of 2022-04-01: 3 negativeWeek of 2022-05-01: 19 positiveWeek of 2022-05-01: 4 negativeWeek of 2022-06-01: 26 positiveWeek of 2022-07-01: 27 positiveWeek of 2022-07-01: 3 negativeWeek of 2022-08-01: 34 positiveWeek of 2022-08-01: 3 negativeWeek of 2022-09-01: 12 positiveWeek of 2022-10-01: 21 positiveWeek of 2022-11-01: 30 positiveWeek of 2022-12-01: 32 positiveWeek of 2022-12-01: 1 negativeWeek of 2023-01-01: 34 positiveWeek of 2023-01-01: 1 negativeWeek of 2023-02-01: 16 positiveWeek of 2023-02-01: 2 negativeWeek of 2023-03-01: 10 positiveWeek of 2023-03-01: 2 negativeWeek of 2023-04-01: 9 positiveWeek of 2023-04-01: 2 negativeWeek of 2023-05-01: 10 positiveWeek of 2023-05-01: 2 negativeWeek of 2023-06-01: 7 positiveWeek of 2023-06-01: 1 negativeWeek of 2023-07-01: 15 positiveWeek of 2023-07-01: 1 negativeWeek of 2023-08-01: 13 positiveWeek of 2023-08-01: 2 negativeWeek of 2023-09-01: 12 positiveWeek of 2023-09-01: 1 negativeWeek of 2023-10-01: 9 positiveWeek of 2023-11-01: 11 positiveWeek of 2023-12-01: 10 positiveWeek of 2024-01-01: 17 positiveWeek of 2024-02-01: 8 positiveWeek of 2024-02-01: 1 negativeWeek of 2024-03-01: 12 positiveWeek of 2024-03-01: 1 negativeWeek of 2024-04-01: 11 positiveWeek of 2024-05-01: 7 positiveWeek of 2024-06-01: 11 positiveWeek of 2024-07-01: 9 positiveWeek of 2024-07-01: 1 negativeWeek of 2024-08-01: 11 positiveWeek of 2024-08-01: 2 negativeWeek of 2024-09-01: 9 positiveWeek of 2024-09-01: 1 negativeWeek of 2024-10-01: 6 positiveWeek of 2024-11-01: 9 positiveWeek of 2024-11-01: 1 negativeWeek of 2024-12-01: 10 positiveWeek of 2024-12-01: 1 negativeWeek of 2025-01-01: 12 positiveWeek of 2025-02-01: 5 positiveWeek of 2025-02-01: 1 negativeWeek of 2025-03-01: 10 positiveWeek of 2025-03-01: 1 negativeWeek of 2025-04-01: 5 positiveWeek of 2025-04-01: 1 negativeWeek of 2025-05-01: 5 positiveWeek of 2025-05-01: 1 negativeWeek of 2025-06-01: 5 positiveWeek of 2025-06-01: 1 negativeWeek of 2025-07-01: 6 positiveWeek of 2025-07-01: 1 negativeWeek of 2025-08-01: 12 positiveWeek of 2025-08-01: 2 negativeWeek of 2025-09-01: 1 positiveWeek of 2025-10-01: 9 positiveWeek of 2025-11-01: 12 positiveWeek of 2025-12-01: 7 positiveWeek of 2025-12-01: 1 negativeWeek of 2026-01-01: 6 positiveWeek of 2026-01-01: 1 negativeWeek of 2026-02-01: 5 positiveWeek of 2026-03-01: 6 positiveWeek of 2026-04-01: 15 positiveWeek of 2026-04-01: 1 negativeWeek of 2026-05-01: 13 positiveWeek of 2026-05-01: 1 negativeWeek of 2026-06-01: 11 positiveWeek of 2026-07-01: 15 positiveWeek of 2026-07-01: 3 negativeWeek of 2026-08-01: 15 positiveWeek of 2026-08-01: 1 negative
Weekly review counts (Steam review histogram). Positive above the line, negative below.

Players online

502026-09-14 22:00 — 2 players2026-09-16 07:00 — 0 players2026-09-17 14:00 — 2 players2026-09-18 22:00 — 0 players2026-09-20 05:00 — 0 players2026-09-21 13:00 — 1 players2026-09-22 20:00 — 0 players2026-09-24 04:00 — 0 players2026-09-25 11:00 — 0 players2026-09-26 19:00 — 2 players2026-09-28 02:00 — 0 players2026-09-29 10:00 — 0 players2026-09-30 17:00 — 1 players2026-10-02 01:00 — 0 players2026-10-03 08:00 — 4 players2026-10-04 17:00 — 4 players2026-10-06 00:00 — 0 players2026-10-07 08:00 — 3 players2026-10-08 15:00 — 1 players2026-10-09 23:00 — 2 players2026-10-11 06:00 — 5 players2026-10-12 14:00 — 0 players2026-10-13 21:00 — 2 players2026-10-14 13:00 — 2 players
Concurrent players, hourly average, last 30 days (census samples).

Price history

$14.99$1.002018-02-092026-10-142018-02-09 — best price $7.912018-11-21 — best price $6.292019-10-29 — best price $6.292020-12-22 — best price $4.042021-06-24 — best price $4.042021-11-26 — best price $4.042022-02-03 — best price $8.992022-06-23 — best price $3.142022-09-27 — best price $8.992022-12-01 — best price $8.992023-01-31 — best price $8.992023-04-04 — best price $8.992023-07-07 — best price $3.142023-09-14 — best price $7.492023-12-12 — best price $7.492024-02-07 — best price $7.492024-03-21 — best price $14.992024-05-21 — best price $4.492024-07-18 — best price $7.492024-10-28 — best price $4.492025-01-02 — best price $14.992025-03-20 — best price $14.992025-09-19 — best price $8.992025-10-09 — best price $4.492026-01-05 — best price $14.992026-02-28 — best price $8.992026-05-06 — best price $14.992026-07-21 — best price $2.252026-08-31 — best price $2.252026-09-08 — best price $2.252026-09-16 — best price $2.252026-09-24 — best price $2.252026-10-02 — best price $2.252026-10-10 — best price $8.992026-10-14 — best price $2.25
Lowest recorded price across tracked stores, per day (census snapshots).

Attention

2702026-06-01 — 13 pageviews2026-06-05 — 14 pageviews2026-06-09 — 12 pageviews2026-06-13 — 20 pageviews2026-06-17 — 9 pageviews2026-06-21 — 7 pageviews2026-06-25 — 9 pageviews2026-06-29 — 14 pageviews2026-07-03 — 18 pageviews2026-07-07 — 15 pageviews2026-07-11 — 7 pageviews2026-07-15 — 5 pageviews2026-07-19 — 14 pageviews2026-07-23 — 9 pageviews2026-07-27 — 13 pageviews2026-07-31 — 10 pageviews2026-08-04 — 9 pageviews2026-08-08 — 14 pageviews2026-08-12 — 27 pageviews2026-08-16 — 9 pageviews2026-08-20 — 15 pageviews2026-08-24 — 15 pageviews2026-08-28 — 17 pageviews2026-09-01 — 13 pageviews2026-09-05 — 18 pageviews2026-09-09 — 10 pageviews2026-09-13 — 9 pageviews2026-09-17 — 3 pageviews2026-09-21 — 10 pageviews2026-09-25 — 10 pageviews2026-09-29 — 7 pageviews2026-10-03 — 12 pageviews2026-10-07 — 4 pageviews2026-10-11 — 9 pageviews
Daily Wikipedia pageviews (attention proxy, census-recorded).

Completion

22
achievements tracked
68.9%
earned "Novice Explorer"
48.2%
median achievement earned by

Global achievement rates from Steam.

Details

WindowsmacOSSingle-playerSteam AchievementsSteam Trading CardsSteam LeaderboardsFamily Sharing2 DLC

5 supported languages: English, Japanese, Traditional Chinese, Simplified Chinese, Korean

Post-launch support: 2 DLC released, first 2018-02-08, latest 2021-11-05 (Steam store data)

Console footprint

PlatformPlayers trackedCompletionTrophies/achievements
Steam (Steam)82046%22
Switch (Nintendo)110%0

Players tracked by Exophase (achievement/trophy trackers) — a sample of the player base, not total sales.

Player tags

2DAnimeIndiePuzzleColorfulRelaxingAdventureEmotionalNarrationStory Rich

Census log

Computed from census-recorded observations only — dates are observation dates.

Players also track

Star Control®: OriginsSurvivalistTanziaForgotton AnneForce of NatureWeapon Shop FantasyUnbound: Worlds ApartCHANGE: A Homeless Survival Experience

Similarity via IGDB.

Official site ↗Wikipedia ↗