Cheapest Sci-fi games on Steam

Steam games tagged “Sci-fi” that you can buy as a key at BuyCheapKeys, compared with their Steam price.

-22% vs Steam

MechRunner

Steam€5.69

BuyCheapKeys key€4.41

-29% vs Steam RRP

Grimstar: Crystals are the New Oil!

Steam RRP€11.99

BuyCheapKeys key€8.54

-25% vs Steam

Aegis

Steam€2.99

BuyCheapKeys key€2.25

-60% vs Steam

Space Warp

Steam€4.99

BuyCheapKeys key€2.01

-38% vs Steam

Radio Viscera

Steam€16.79

BuyCheapKeys key€10.41

-35% vs Steam

Orch Star

Steam€14.99

BuyCheapKeys key€9.70

BOT.vinnik Chess: Prodigies

Steam RRP€1.99

BuyCheapKeys key€2.14

-41% vs Steam RRP

Baseless

Steam RRP€12.99

BuyCheapKeys key€7.62

-61% vs Steam

HA/CK

Steam€8.99

BuyCheapKeys key€3.53

-61% vs Steam RRP

GoobnBalloonsDX

Steam RRP€9.75

BuyCheapKeys key€3.85

-78% vs Steam RRP

Lemuria: Lost in Space

Steam RRP€9.75

BuyCheapKeys key€2.19

-66% vs Steam RRP

Drift Into Eternity

Steam RRP€19.99

BuyCheapKeys key€6.76

T-Kara Puzzles

Steam RRP€4.99

BuyCheapKeys key€6.33

-66% vs Steam RRP

Lunar Lander Beyond

Steam RRP€28.99

BuyCheapKeys key€9.76

-55% vs Steam

Mayhem Intergalactic

Steam€7.99

BuyCheapKeys key€3.60

Not on Steam

Sanctus Mortem

Steam—

BuyCheapKeys key€6.65

-46% vs Steam

The Fall of Aether Station

Steam€12.79

BuyCheapKeys key€6.97

-68% vs Steam RRP

Tales of Tomorrow: Experiment

Steam RRP€8.19

BuyCheapKeys key€2.61

SPACE BATTLE: Humanity

Steam€1.93

BuyCheapKeys key€3.05

-5% vs Steam RRP

INSPACE 2980

Steam RRP€2.39

BuyCheapKeys key€2.27

-60% vs Steam RRP

Ascender

Steam RRP€8.79

BuyCheapKeys key€3.49

-61% vs Steam

Super Gravity Ball

Steam€9.99

BuyCheapKeys key€3.90

-70% vs Steam RRP

Bionic Heart 2

Steam RRP€14.79

BuyCheapKeys key€4.46

Time of the Clones

Steam RRP€1.99

BuyCheapKeys key€5.10

-13% vs Steam RRP

Hard Glide

Steam RRP€6.89

BuyCheapKeys key€6.01

Anatomy of Fear

Steam€2.99

BuyCheapKeys key€3.84

-43% vs Steam RRP

S. Prysm Destroyer

Steam RRP€7.79

BuyCheapKeys key€4.41

-51% vs Steam

Hot Plates

Steam€4.99

BuyCheapKeys key€2.46

Frontiers Reach

Steam RRP€19.50

BuyCheapKeys key€30.44

-74% vs Steam RRP

AnShi

Steam RRP€14.99

BuyCheapKeys key€3.91

-12% vs Steam

Swing By

Steam€9.75

BuyCheapKeys key€8.59

-38% vs Steam RRP

Cuboid Keeper

Steam RRP€5.69

BuyCheapKeys key€3.53

-33% vs Steam RRP

DINO MERCS

Steam RRP€6.99

BuyCheapKeys key€4.71

XO-Planets

Steam RRP€1.99

BuyCheapKeys key€3.01

Terrorformer TD

Steam RRP€8.15

BuyCheapKeys key€13.70

-29% vs Steam RRP

Defenders of the Last Colony

Steam RRP€4.99

BuyCheapKeys key€3.54

-63% vs Steam

Cosmic Awakening VR

Steam€11.99

BuyCheapKeys key€4.47

An Octonaut Odyssey

Steam€0.79

BuyCheapKeys key€3.79

-72% vs Steam RRP

Aerial_Knight's We Never Yield

Steam RRP€14.99

BuyCheapKeys key€4.26

-52% vs Steam

Miaou Moon

Steam€4.99

BuyCheapKeys key€2.41

-50% vs Steam RRP

Baggage Inspector

Steam RRP€7.79

BuyCheapKeys key€3.86

Radio Free Europa

Steam€4.99

BuyCheapKeys key€6.00

-48% vs Steam RRP

Haxor

Steam RRP€6.99

BuyCheapKeys key€3.61

-42% vs Steam

Darkness Rollercoaster - Ultimate Shooter Edition

Steam€2.99

BuyCheapKeys key€1.74

-67% vs Steam RRP

Laser Disco Defenders

Steam RRP€8.99

BuyCheapKeys key€2.95

-50% vs Steam

SCHAR: Blue Shield Alliance

Steam€3.99

BuyCheapKeys key€1.98

-84% vs Steam

The Galactic Junkers

Steam€13.99

BuyCheapKeys key€2.30

-37% vs Steam

CoLab

Steam€4.99

BuyCheapKeys key€3.12