OPUS: Rocket of Whispers is a Adventure game from SIGONO INC. with a 89% positive Steam review signal. Indie Lantern indexes it for players browsing by weird, single-player.

Game snapshot
- Developer
- SIGONO INC.
- Release year
- 2018
- Playtime
- Varies by player
- Price
- $14.99
- Review signal
- 89% positive
Screenshots






System requirements
PC
- Minimum
- OS *: Windows XP, Vista, 7, 10
Processor: 1.4 GHz Dual Core or Greater
Memory: 2 GB RAM
Graphics: 256 MB OpenGL 2.0 compatible graphics card
macOS
- Minimum
- OS: OS X Snow Leopard or later
Processor: 1.4 GHz Dual Core or Greater
Memory: 2 GB RAM
Graphics: 256 MB OpenGL 2.0 compatible graphics card
From Steam reviews
Review notes
OPUS: Rocket of Whispers is worth a closer look if you want emotional story, exploration, narrative adventure, and strong atmosphere.
Best for players who want emotional story, strong atmosphere, post-apocalyptic, and exploration.
emotional-story
ToneThe story is framed as affecting rather than just plot-heavy.
exploration
Play styleThe draw is moving through spaces, discovering details, and learning the world.
narrative-adventure
Play styleThe experience is more story-and-place driven than systems-heavy.
strong-atmosphere
ToneThe mood, place, and presentation carry a lot of the experience.
post-apocalyptic
SettingThe world reads as ruined, hostile, or shaped by collapse.
melancholic
ToneThe emotional register is quieter, sadder, or bittersweet.
short-game
PacingIt is better understood as a compact experience than a long hobby game.
psychological-horror
SettingThe fear comes through pressure, perception, or psychological unease.
Steam review snapshots
The beginning can be a bit slow since you will have basic equipment and not suitable for long walks in the snow…This game has a very moving story.everything related to the universe, the stars, the cosmos is a subject that awakens all the love and melancholy of the heart…In the 1st game, the space station is named Opus, in this 2nd game the rocket making factory is named Opus.Why it fits
Check it if you want adventure filtered by weird, single-player.
Who might skip it
Research further on Steam if you need verified accessibility details, exact playtime, or current system requirements.