Sidereal
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About Sidereal
Sidereal follows a mysterious wanderer with bright eyes and a tall black hat across forgotten worlds. You uncover their stories, cleanse their darkness and discover what happened to vanished civilizations.
Explore the worlds
You travel through more than 100 visually distinct worlds and between them. Along the way, you encounter ancient imprisoned souls fighting to preserve their fragile existence, and uncover mysterious secrets.
Fight and discover
You use strange white weapons and flames to destroy barbed black structures. Relics and scattered remnants of vanished civilizations reveal traces of the past, while a hidden power waits within your heart. Dynamic progression and hundreds of collectible items, each with its own story, accompany your journey through thematic music and ambience.
Frequently asked questions
Yes. Sidereal is free to play on Steam, so there is nothing to buy to start playing.
The minimum requirements for Sidereal are: Windows 7, 4 GB RAM, 7 GB storage. It runs on Windows only. The recommended specs are in the System requirements section.
No. Sidereal is a single-player game.
Mostly, yes. Valve rates Sidereal as Playable on the Steam Deck: it runs, but may need some manual setup.
Yes. Sidereal is the full base game. You need nothing else to play it.











