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.

-80% vs Steam RRP

Sable

Steam RRP€24.99

BuyCheapKeys key€5.07

-73% vs Steam RRP

Arctic Eggs

Steam RRP€9.75

BuyCheapKeys key€2.60

-80% vs Steam RRP

1000xRESIST

Steam RRP€19.50

BuyCheapKeys key€3.98

-25% vs Steam RRP

Haven

Steam RRP€24.99

BuyCheapKeys key€18.86

-81% vs Steam RRP

Terraforming Mars

Steam RRP€19.99

BuyCheapKeys key€3.79

-7% vs Steam RRP

Space Engineers 2

Steam RRP€25.49

BuyCheapKeys key€23.81

-49% vs Steam RRP

FINAL FANTASY® XIII-2

Steam RRP€15.99

BuyCheapKeys key€8.21

-37% vs Steam RRP

Tower Dominion

Steam RRP€16.99

BuyCheapKeys key€10.64

-76% vs Steam RRP

Battlefleet Gothic: Armada (Classic)

Steam RRP€14.99

BuyCheapKeys key€3.61

-58% vs Steam RRP

Invisible, Inc.

Steam RRP€19.99

BuyCheapKeys key€8.44

-86% vs Steam RRP

Warhammer 40,000: Battlesector

Steam RRP€40.86

BuyCheapKeys key€5.55

-72% vs Steam RRP

The Swapper

Steam RRP€13.99

BuyCheapKeys key€3.85

-70% vs Steam RRP

Exo One

Steam RRP€16.49

BuyCheapKeys key€4.91

-58% vs Steam RRP

Wildgate

Steam RRP€9.59

BuyCheapKeys key€4.01

-51% vs Steam RRP

Star Trucker

Steam RRP€24.50

BuyCheapKeys key€11.94

-68% vs Steam RRP

SD GUNDAM BATTLE ALLIANCE

Steam RRP€49.99

BuyCheapKeys key€15.84

-48% vs Steam RRP

Xenonauts 2

Steam RRP€39.99

BuyCheapKeys key€20.60

GNOSIA

Steam€20.99

BuyCheapKeys key€31.69

-88% vs Steam RRP

The Bureau: XCOM Declassified

Steam RRP€19.99

BuyCheapKeys key€2.44

-48% vs Steam RRP

FINAL FANTASY VIII - REMASTERED

Steam RRP€19.99

BuyCheapKeys key€10.40

-80% vs Steam RRP

Age of Wonders: Planetfall

Steam RRP€29.99

BuyCheapKeys key€6.05

Selaco

Steam€24.50

BuyCheapKeys key€35.95

-85% vs Steam RRP

The Gunk

Steam RRP€18.45

BuyCheapKeys key€2.69

-22% vs Steam

Primal Carnage

Steam€7.99

BuyCheapKeys key€6.26

-66% vs Steam RRP

Serious Sam: Siberian Mayhem

Steam RRP€19.50

BuyCheapKeys key€6.65

-62% vs Steam RRP

Zero Escape: Zero Time Dilemma

Steam RRP€16.79

BuyCheapKeys key€6.38

-18% vs Steam RRP

Wasteland 2: Director's Cut

Steam RRP€24.99

BuyCheapKeys key€20.46

-83% vs Steam RRP

Lost Ruins

Steam RRP€19.50

BuyCheapKeys key€3.36

-37% vs Steam RRP

Predator: Hunting Grounds

Steam RRP€19.50

BuyCheapKeys key€12.30

-80% vs Steam RRP

Broken Age

Steam RRP€12.49

BuyCheapKeys key€2.54

-78% vs Steam RRP

Observation

Steam RRP€27.40

BuyCheapKeys key€6.09

-78% vs Steam RRP

Brigador: Up-Armored Edition

Steam RRP€19.99

BuyCheapKeys key€4.35

Not on Steam

Command & Conquer: Red Alert 3 - Uprising

Steam—

BuyCheapKeys key€4.25

-53% vs Steam RRP

Atomfall

Steam RRP€49.99

BuyCheapKeys key€23.35

-51% vs Steam RRP

Creeper World 4

Steam RRP€24.50

BuyCheapKeys key€12.05

Viscera Cleanup Detail: Santa's Rampage

Steam€2.49

BuyCheapKeys key€4.19

-3% vs Steam RRP

Defense Grid: The Awakening

Steam RRP€7.99

BuyCheapKeys key€7.74

Silica

Steam RRP€19.99

BuyCheapKeys key€22.74

Phantom Brigade

Steam RRP€28.99

BuyCheapKeys key€35.86

-23% vs Steam RRP

MIO: Memories in Orbit

Steam RRP€19.99

BuyCheapKeys key€15.31

-76% vs Steam RRP

I Was a Teenage Exocolonist

Steam RRP€24.50

BuyCheapKeys key€5.76

-91% vs Steam

GRAV

Steam€19.99

BuyCheapKeys key€1.79

-15% vs Steam RRP

Beyond Citadel

Steam RRP€14.79

BuyCheapKeys key€12.62

Metal Garden

Steam RRP€5.89

BuyCheapKeys key€6.36

-39% vs Steam RRP

PULSAR: Lost Colony

Steam RRP€19.50

BuyCheapKeys key€11.99

Halo: Spartan Assault

Steam RRP€2.99

BuyCheapKeys key€30.72

-71% vs Steam RRP

Gato Roboto

Steam RRP€7.79

BuyCheapKeys key€2.24

-44% vs Steam RRP

Quake Live

Steam RRP€9.99

BuyCheapKeys key€5.56