70%Strong matchSpaceEngine
96%9k96% positive reviews, Overwhelmingly Positive across 9k reviews·Open World · Sci-fi
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Explore time and space as you learn about astronomy and earn stars to buy overlays for the Earth and Sun and control the passage of time. Soon you will be able to simulate and observe Earth/Sun correspondences from any age and perspective as you use keyboard and mouse controls to fly through space.
Signs and Seasons
SteamExplore time and space as you learn about astronomy and earn stars to buy overlays for the Earth and Sun and control the passage of time. Soon you will be able to simulate and observe Earth/Sun correspondences from any age and perspective as you use keyboard and mouse controls to fly through space.


Reckon and Cipher
Overlay graphics on the Earth and Sun enabling quick identification of cosmic and achronic conjunctions and oppositions between the Earth, Sun, and signs.

POV
Move to predefined vantage points to observe.

Warp Away
Move the Earth in an instant. Jump directly to the Vernal Equinox, the Summer Solstice, the Autumnal Equinox, or the Winter Solstice with a single click. Span the millennia with equal ease and jump to any age.

The Lever of Time
Drag a slider to speed up time. Make the days fly by. Months in a moment. The Earth spins around the sun and years turn into centuries, then you can see the Precession of the Equinoxes.

Explore
Use your keyboard and mouse to fly a spaceship to find your own perfect perch.

Super Settings
Adjust scene visuals like lighting, Sun brightness, bloom, saturation, and posterization. Ambient background music, sound effects, and narration each have their own volume and mute controls.
Steam data © 2026 Valve Corporation. Trademarks are property of their respective owners.
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