Celestia is an application for real-time 3D visualization of space, with a detailed model of the solar system, over 100,000 stars, more than 10,000 galaxies, and an extension mechanism for adding more objects.



Pioneer is described as 'Space adventure game set in the Milky Way galaxy at the turn of the 31st century. The game is open-ended, and you are free to explore the millions of star systems in the game. You can land on planets, slingshot past gas giants, and burn yourself to a crisp flying' and is a simulation games in the games category. There are more than 10 games similar to Pioneer for a variety of platforms, including Windows, Linux, Mac, Steam and iPad apps. The best Pioneer alternative is Celestia, which is both free and Open Source. Other Pioneer like games are Everspace, Oolite, Children of a Dead Earth and Universe Sandbox.
Celestia is an application for real-time 3D visualization of space, with a detailed model of the solar system, over 100,000 stars, more than 10,000 galaxies, and an extension mechanism for adding more objects.



Everspace is a single-player 3D space shooter game series with roguelike elements and non-linear storytelling created by ROCKFISH Games.




Oolite is a space sim game, inspired by Elite. Among Oolite's several similarities to its inspirational source, the gaming experience is enhanced by the context set in Elite's original manual, and the accompanying novella, The Dark Wheel.




Children of a Dead Earth is a simulation of true-to-life space warfare. Design your spacecrafts using real world technologies. Traverse the solar system using actual orbit mechanics. Command fleets as the solar system descends into war, and see if you have what it takes to...




Create & destroy on an unimaginable scale with a realistic physics-based space simulator. Explore the beauty of our universe and the fragility of our planet. Use science to bend the laws of gravity, collide planets, boil away oceans, fire epic space lasers, and customize your universe.


Star Fox is a rail shooter, space flight simulator, and [third person](https://alternativeto.

Vega Strike is an Open Source 3D Action-Space-Sim that lets you trade, fight, and explore in a vast universe.




Spore is a multi-genre single-player god game developed by Maxis and designed by Will Wright.



Zen Koi is a fun, relaxing and stylish mobile game experience from LandShark Games. Grow, breed and collect beautiful Japanese carp as they make their way to mythological dragon form.






Elite: Dangerous is a space adventure, trading, and combat simulator that is the fourth release in the Elite video game series.




Orbiter is a realistic 3D real-time space flight simulator program.
Fed up with space games that insult your intelligence and violate every law of physics? Orbiter is a simulator that gives you an idea what space flight really feels like - today and in the not so distant future.



Create and manage your own space program, build and fly spacecraft, and try to conquer space.




this is not remotely similar to pioneer its not even a space game