Sirius-4 is an adventure, released 3 September 2025 on PC (Microsoft Windows).
What Sirius-4 is
Sirius-4 was released in 2025. It is available on PC (Microsoft Windows) only.
The premise, in the publisher's words
"Sirius-4" is a plot-oriented space simulator that gives the player complete freedom of action as a hired pilot of the "Sirius" unit. The action takes place on the outskirts of human space during a turbulent time for the galaxy after a global war.
How it plays
It is a single-player game with no multiplayer component.
What it launched against
Sirius-4 launched on 3 September 2025, within three weeks of Hollow Knight: Silksong, Metal Gear Solid Delta: Snake Eater, Hell is Us and Cronos: The New Dawn.
Released around the same time: Hollow Knight: Silksong, Metal Gear Solid Delta: Snake Eater, Hell is Us, Cronos: The New Dawn.
Screenshots
All media
Quick answers
Sirius-4 — frequently asked questions
When did Sirius-4 come out?
Sirius-4 was released on 3 September 2025 for PC (Microsoft Windows).
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