Science fiction Games
Harlan Ellison: I Have No Mouth, and I Must Scream
Maniac Mansion
Z
SimCity 2000
Wolfenstein 3D
X-COM: UFO Defense
Master of Orion II: Battle at Antares
Master of Orion
Duke Nukem 3D
Command & Conquer
Command & Conquer: Red Alert
Fallout
Contra
Jazz Jackrabbit
Commander Keen 4
Explore distant worlds, command starships, and battle alien threats â science fiction has inspired some of gaming's boldest and most imaginative classics. This collection gathers retro sci-fi titles from the golden age of PCs and consoles, all playable instantly in your browser with nothing to install.
Adventures Among the Stars
Science fiction gives games a limitless canvas: far-future technology, alien civilizations, and the vast unknown of space. The genre spans epic space strategy, tense shooters, story-rich adventures, and everything in between â united by a sense of wonder and possibility. Whether you're exploring the galaxy, defending Earth, or unraveling a mystery on a distant planet, sci-fi classics deliver worlds unlike anything else.
The retro era embraced science fiction wholeheartedly, producing visionary games that still feel ahead of their time.
What You'll Find Here
Our sci-fi collection spans many styles:
- Space strategy & exploration â journey across the galaxy in Star Control II and expand your empire in Ascendancy.
- Alien-defense strategy â protect humanity in X-COM: UFO Defense.
- Sci-fi action & shooters â battle through futuristic worlds in MechWarrior 2 and Duke Nukem.
New titles are added regularly, so there's always another frontier to explore.
How to Play in Your Browser
Every game here runs directly in your browser â press Play and you're in, with no download and no setup. Console titles play great on both desktop and mobile, while keyboard- and mouse-driven PC classics are best enjoyed on a desktop or laptop, where managing your ship, squad, or arsenal is comfortable.
Why Play Sci-Fi Games Online?
No vintage hardware, no configuration, no rare discs â just press Play and blast off, exactly as these games played back then. It's the easiest way to revisit a favorite or discover a classic you missed, free and instant.
Frequently Asked Questions
Are these sci-fi games free to play? Yes. Every title loads and runs in your browser at no cost â no account and no download required.
Do I need to install anything? No. The games run entirely in your browser. Just open a title and press Play.
Can I play on my phone? Console games play great on mobile with an on-screen gamepad; strategy- and mouse-driven PC titles are best on a desktop or laptop.
Browse the collection below and press Play on any title to jump straight in.