Pioneer Scout Plus

A game of missions, trade and space combat in the 31st century using the Pioneer Space Sim engine…

13 Alternatives To Pioneer Scout Plus

Ad Astra

Ad Astra is an open-ended space exploration game which has attempted to model a Galaxy of over…

Celestia

Celestia - real-time 3D visualization of space.

Cosmographia

This is an app that will let you explore the Solar System!
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Cosmonium

Cosmonium is a 3D astronomy and space exploration program.

Digital Universe Atlas

Discover the universe with our downloadable atlas—the Digital Universe—where you can fly from the Sun out the edge of the observable universe.
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Harmony of the Spheres

Gravitational n-body and space simulator written in JavaScript and WebGL
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Kerbal Space Program

Build spacecraft, fly them, and try to help the Kerbals to fulfill their ultimate mission of conquering space.
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Orbiter

Orbiter is a realistic 3D real-time space flight simulator program. Official site with free download. DownloadDownload mirror 1 Europe - Textures - Gallery - Links - .
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Shores of Hazeron

Unscripted, living and thriving universe.
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Space Engine

Space Engine is a realistic virtual Universe you can explore on your computer.

Spore

Player Made Creations. Download the free Creature Creator to start making your own unique creations. See More · Spore. rabbi airs. Kangster.

Universe Sandbox

Universe Sandbox ² is a physics-based space simulator.
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Vendetta Online

The space-based MMO Vendetta Online balances an online trading system with tense ship-to=ship combat.