36 similar games
Games like Outspace
Browser games that play like Outspace, closest match first. Lime means it runs right here.

Web browser MMO game made by single person. The games below have the most in common with it — real time strategy (rts), 4x (explore, expand, exploit, and exterminate), science fiction — ranked by how closely they match, favouring the ones you can play right here in your browser.
Top picks
The 10 closest to Outspace
- GalconPlays here
Galcon is a real time strategy video game developed by Phil Hassey. In common: space strategy, real time strategy (rts), science fiction.
- PardusPlays here
Pardus is a free award-winning, real-time graphical game set in a futuristic universe that can be played right from your browser! In common: space flight, space mining, real time strategy (rts).
- OGamePlays on lobby.ogame.gameforge.com
OGame is a strategy game set in space, with thousands of players from across the world competing at the same time. In common: space mining, space strategy, real time strategy (rts).
- Kron Wars
Kron Wars is a persistent browser-based sci-fi MMO where players trade, mine, build corporations, wage wars, hunt bounties, and control entire sectors across… In common: space mining, 4x (explore, expand, exploit, and exterminate), free to play.
- New WorldsPlays here
New Worlds is a space-faring universe simulation game where you navigate gravity to explore, complete missions, trade, upgrade and improve your ship fleet. In common: space strategy, 4x (explore, expand, exploit, and exterminate), science fiction.
- HegemarchPlays here
Hegemarch is a real-time space strategy roguelite played in the web browser. In common: 4x (explore, expand, exploit, and exterminate), real time strategy (rts), science fiction.
- Interstellar EmpiresPlays on interstellar-empires.com
Interstellar Empires is a browser-based 4X strategy game where you build a base, manage resources, and expand in a persistent sci fi world. In common: 4x (explore, expand, exploit, and exterminate), real time strategy (rts), science fiction.
- Abyssus Deep UnderPlays here
Theme: Abyssus Deep Under transports players into an underwater world, where the mysteries of the deep ocean await exploration and conquest. In common: 4x (explore, expand, exploit, and exterminate), real time strategy (rts), science fiction.
- GalaxywarsOffline
Galaxywars was the first major German-language browser game, operated by Gameforge AG. In common: space strategy, 4x (explore, expand, exploit, and exterminate), real time strategy (rts).
- Endless LeagueOffline
Select your spaceship and get ready to battle. In common: space strategy, real time strategy (rts), free to play.
All matches
Every game like Outspace
PlayableGalcon
Space Strategy · 2008
PlayablePardus
Aliens · 2004
PlayableOGame
Space Simulation · 2002
AlphaKron Wars
Space Simulation · 2026
PlayableEarly accessNew Worlds
Space Simulation · 2026
PlayableHegemarch
Procedural Generation · 2026
PlayableAlphaInterstellar Empires
Science fiction · 2025
PlayableBetaAbyssus Deep Under
Underwater · 2024
OfflineGalaxywars
Space Strategy · 2001
AlphaEndless League
Space Combat · 2018
PlayableXterium: War of Alliances
Space · 2017
OfflineImperion
Mmorts
PlayableCommand & Conquer: Tiberium Alliances
Free to Play · 2012
PlayableTravian: Legends
Military · 2004
PlayableEarly accessFrontWars
4X (Explore, Expand, Exploit, and Exterminate) · 2023
Early accessProject Nebula
Space · 2021
PlayableAlderun
Tower Defense · 2026

Colony Battle
Ants · 2021
PlayableExocraft.io
Space Simulation · 2018
PlayableHamenos
Space Strategy · 2023
PlayableAlphaZero-G MMO
Aliens · 2026
PlayableSlipways
Science fiction · 2018
PlayableCreeper World
Post Apocalyptic · 2007
PlayableSlipstream: Rogue Space
Space · 2023
PlayableMaze Game
Maze · 2022
PlayableNodwar
Science fiction · 2026
PlayableSpace Domination
Science fiction · 2003
PlayableEarly accessPokémon Royale
Pokemon · 2026
PlayableFleet Conquest
Real Time Tactics · 2026
OfflineGalaxy Life Reborn
Space · 2011
PlayableAstro Prospector
Casual · 2025
PlayableLordship
Pixel Art · 2024
PlayableColony
Science fiction · 2009
PlayableAlphaUniverse Dawn
Spaceship · 2024
PlayableAlphaeDominations
Free to Play · 2017
AlphaSpaceTac
Space Combat