The Game Census
OPUS: Rocket of Whispers cover art

OPUS: Rocket of Whispers

SIGONO INC. · 2018-02-07

SteamGOG

AdventureIndie

Modes: Single player

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.

0
playing now
92%
positive of 1.7k reviews
Very Positive
steam rating
200,000–500,000
owners (SteamSpy est.)
60/100
IGDB user rating (10 ratings)
platinum
deck/linux tier (ProtonDB)
$14.99
steam price (US)

0 players in-game as of 2026-08-30 04:00 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

Insufficient data
  • · Not enough review history collected yet to judge health.
  • · Top 24% of 11,332 Adventure games in the census by review count.
Estimated sales: 43k–103k copies

Review-multiple estimate from 1,715 total reviews — how this is computed.

Current store prices

GOG$2.25-75%
lowest across shops (ITAD)$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 39 of 48 observed days · $1.25 above the all-time low (census price snapshots)

Players online

702026-08-07 00:00 — 3 players2026-08-07 08:00 — 5 players2026-08-07 16:00 — 3 players2026-08-08 00:00 — 0 players2026-08-08 08:00 — 3 players2026-08-08 16:00 — 5 players2026-08-09 00:00 — 1 players2026-08-09 08:00 — 4 players2026-08-09 16:00 — 7 players2026-08-10 00:00 — 1 players2026-08-10 08:00 — 3 players2026-08-10 16:00 — 4 players2026-08-11 00:00 — 1 players2026-08-11 08:00 — 3 players2026-08-11 16:00 — 3 players2026-08-13 00:00 — 0 players2026-08-14 07:00 — 2 players2026-08-15 15:00 — 4 players2026-08-16 23:00 — 1 players2026-08-18 06:00 — 1 players2026-08-19 14:00 — 2 players2026-08-20 21:00 — 1 players2026-08-22 05:00 — 2 players2026-08-23 12:00 — 5 players2026-08-24 20:00 — 1 players2026-08-26 04:00 — 2 players2026-08-27 12:00 — 1 players2026-08-28 20:00 — 2 players2026-08-30 04:00 — 0 players
Concurrent players, hourly average, last 30 days (census samples).

Price history

$14.99$1.002018-02-092026-08-302018-02-09 — best price $7.912018-10-30 — best price $6.292019-02-04 — best price $6.292020-01-23 — best price $4.492020-12-22 — best price $4.042021-06-08 — best price $1.002021-10-28 — best price $4.042021-12-17 — best price $4.042022-02-03 — best price $8.992022-05-11 — best price $8.992022-08-08 — best price $8.992022-10-27 — best price $3.142022-12-01 — best price $8.992023-01-20 — best price $6.292023-02-21 — best price $8.992023-04-18 — best price $14.992023-07-07 — best price $3.142023-08-28 — best price $3.142023-11-06 — best price $14.992024-01-04 — best price $14.992024-02-07 — best price $7.492024-03-14 — best price $7.492024-04-18 — best price $3.142024-06-05 — best price $4.492024-07-18 — best price $7.492024-10-01 — best price $14.992024-11-27 — best price $7.492025-01-20 — best price $7.492025-03-20 — best price $14.992025-07-10 — best price $8.992025-09-29 — best price $7.492025-10-28 — best price $7.492026-01-05 — best price $14.992026-02-20 — best price $4.492026-03-26 — best price $14.992026-06-01 — best price $4.492026-07-21 — best price $2.252026-08-29 — best price $2.252026-08-30 — best price $2.25
Lowest recorded price across tracked stores, per day (census snapshots).

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

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

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Similarity via IGDB.

Official site ↗Wikipedia ↗