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

AI: THE SOMNIUM FILES - nirvanA Initiative

Steam RRP€39.99

BuyCheapKeys key€7.85

-79% vs Steam RRP

Binary Domain

Steam RRP€14.99

BuyCheapKeys key€3.11

Not on Steam

Warhammer® 40,000: Dawn of War® II Chaos Rising

Steam—

BuyCheapKeys key€11.68

-50% vs Steam RRP

Day of the Tentacle Remastered

Steam RRP€14.99

BuyCheapKeys key€7.55

-65% vs Steam RRP

35MM

Steam RRP€8.79

BuyCheapKeys key€3.11

-42% vs Steam RRP

Quake III Arena

Steam RRP€14.99

BuyCheapKeys key€8.62

-57% vs Steam RRP

Muv-Luv Alternative

Steam RRP€37.99

BuyCheapKeys key€16.27

-43% vs Steam RRP

SIMULACRA

Steam RRP€4.59

BuyCheapKeys key€2.61

-84% vs Steam RRP

Redout: Enhanced Edition

Steam RRP€19.99

BuyCheapKeys key€3.29

POPUCOM

Steam RRP€17.99

BuyCheapKeys key€20.12

-56% vs Steam

Hyper Light Breaker

Steam€28.99

BuyCheapKeys key€12.79

-91% vs Steam RRP

Killer Klowns From Outer Space: The Game

Steam RRP€38.99

BuyCheapKeys key€3.45

-76% vs Steam RRP

Red Faction Guerrilla Re-Mars-tered

Steam RRP€19.99

BuyCheapKeys key€4.75

-83% vs Steam RRP

Turok

Steam RRP€19.99

BuyCheapKeys key€3.38

-91% vs Steam RRP

Deponia: The Complete Journey

Steam RRP€29.99

BuyCheapKeys key€2.75

Lovers in a Dangerous Spacetime

Steam€14.99

BuyCheapKeys key€17.69

-88% vs Steam RRP

The Entropy Centre

Steam RRP€19.99

BuyCheapKeys key€2.33

-80% vs Steam RRP

Spacebase DF-9

Steam RRP€9.99

BuyCheapKeys key€1.99

-44% vs Steam RRP

60 Parsecs!

Steam RRP€9.99

BuyCheapKeys key€5.55

-84% vs Steam RRP

SYNDUALITY Echo of Ada

Steam RRP€39.99

BuyCheapKeys key€6.20

-60% vs Steam RRP

The Complex

Steam RRP€14.79

BuyCheapKeys key€5.94

-20% vs Steam RRP

S.T.A.L.K.E.R.: Call of Prypiat - Enhanced Edition

Steam RRP€19.99

BuyCheapKeys key€15.96

FOUNDRY

Steam RRP€29.99

BuyCheapKeys key€31.46

-43% vs Steam RRP

Serious Sam Classics: Revolution

Steam RRP€9.75

BuyCheapKeys key€5.57

-89% vs Steam RRP

X-Morph: Defense

Steam RRP€23.98

BuyCheapKeys key€2.60

-23% vs Steam RRP

Star Valor

Steam RRP€23.50

BuyCheapKeys key€18.11

-9% vs Steam RRP

Agents of Mayhem

Steam RRP€29.99

BuyCheapKeys key€27.25

-44% vs Steam RRP

STAR OCEAN THE SECOND STORY R

Steam RRP€49.99

BuyCheapKeys key€28.14

-68% vs Steam RRP

Dreamfall Chapters

Steam RRP€24.99

BuyCheapKeys key€8.00

-12% vs Steam RRP

SYNTHETIK 2

Steam RRP€19.99

BuyCheapKeys key€17.69

-71% vs Steam RRP

Scanner Sombre

Steam RRP€6.99

BuyCheapKeys key€2.01

-56% vs Steam RRP

Scythe: Digital Edition

Steam RRP€19.99

BuyCheapKeys key€8.76

-5% vs Steam RRP

Voidling Bound

Steam RRP€25.49

BuyCheapKeys key€24.15

-88% vs Steam RRP

Crying Suns

Steam RRP€20.99

BuyCheapKeys key€2.49

-33% vs Steam RRP

Peripeteia

Steam RRP€23.93

BuyCheapKeys key€15.94

-78% vs Steam RRP

American Arcadia

Steam RRP€19.50

BuyCheapKeys key€4.22

-65% vs Steam RRP

HIVESWAP: ACT 1

Steam RRP€6.49

BuyCheapKeys key€2.30

-87% vs Steam RRP

Tacoma

Steam RRP€19.50

BuyCheapKeys key€2.56

-25% vs Steam RRP

Cluckmech Oasis

Steam RRP€9.75

BuyCheapKeys key€7.29

-52% vs Steam RRP

Techtonica

Steam RRP€28.99

BuyCheapKeys key€13.82

-21% vs Steam RRP

Among Us 3D

Steam RRP€9.49

BuyCheapKeys key€7.53

-89% vs Steam RRP

Starpoint Gemini Warlords

Steam RRP€31.99

BuyCheapKeys key€3.46

-88% vs Steam RRP

INDUSTRIA

Steam RRP€19.99

BuyCheapKeys key€2.46

-70% vs Steam RRP

Eternights

Steam RRP€29.99

BuyCheapKeys key€8.85

-88% vs Steam RRP

Gravity Circuit

Steam RRP€16.99

BuyCheapKeys key€2.05

-61% vs Steam RRP

Obduction

Steam RRP€30.49

BuyCheapKeys key€11.93

-83% vs Steam RRP

Terraformers

Steam RRP€19.99

BuyCheapKeys key€3.35

-52% vs Steam RRP

Hyperdimension Neptunia Re;Birth3 V Generation

Steam RRP€14.79

BuyCheapKeys key€7.11