Best PC Science Fiction Games

Defend a Texas border town from alien invasion using surveillance cameras.

Become an Avatar and choose your side in Pandora's epic conflict

Evolve your creature from a single cell into a galactic god across five distinct stages.

Retro tower defense where you craft mazes and unleash abilities against alien swarms

Classic turn‑based strategy meets modern graphics and community‑driven development

Explosive side‑scrolling action with up to four bros battling terror worldwide.

A sci‑fi FMV puzzle adventure where a disembodied brain guides his crew to survive a dying alien ship

Three factions clash in a deep sci‑fi RTS with epic units and strategic tech trees.

Pilot a lone hunter in deep space, blasting gas‑filled hawks before they engulf you

Travel back to ancient Rome and blast hordes of Mental's minions in a fast‑paced shooter.

Defend humanity with a lone powerful spaceship in a retro sci‑fi shooter

Dive into the human body to stop a mind‑control probe

Explore a mysterious island and solve over 500 mind-bending puzzles.

Blast through space in a fast‑paced sci‑fi shooter adventure

Blast alien hordes in a retro 3DO space shooter.

Battle eco‑ghosts in a plant‑overrun Amity Park with new freeze powers.

Retro vertical shooter delivering fast‑paced sci‑fi action on the Sega Genesis.

Become a freelance hacker, earn money and upgrade your rig in a cyber‑punk world

Fast‑paced side‑scrolling adventure with Sonic and Tails on West Side Island

A brutally hard retro platform beat‑em‑up with co‑op chaos

A revolutionary fighting game with adaptive AI and morphing robots

Retro 3D space shooter that launched on RISC OS and 3DO.

Navigate a quark through a subatomic puzzle adventure

Old‑school side‑scrolling shooter with sketch‑shaded Western action.