Best Kerbal Space Program Alternatives & Competitors in 2025

Player-created empires, player-driven markets, and endless ways to embark on your personal sci-fi adventure.

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Star Conflict is a free MMO action game and space simulator that was introduced in 2012.

Elite Dangerous is a 2015 Trading, Action, Sci-fi, Exploration, Open World and Space Simulation by Frontier Developments.

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

Pioneer is a space adventure game set in the Milky Way galaxy at the turn of the 31st century.

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Universe Sandbox ² is a physics-based space simulator where you can simulate Events and even break physics and friction with certain features.

OGame is an addictive, Massively Multiplayer Online, Real-time Strategy, Space-war, and Money Management Browser-based video game develop by Gameforge AG.

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

X3: Terran Conflict is part of the X number of video games.

Star Trek Online (STO) is a free to play MMORPG that takes place inside the Star Trek world.

Ace Online is a distinctive 3D MMO that places you in the pilot seat of your personal fighter ship (called a Gear).

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