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.

-79% vs Steam RRP

Sanctum 2

Steam RRP€14.99

BuyCheapKeys key€3.20

-21% vs Steam RRP

ROUTINE

Steam RRP€24.99

BuyCheapKeys key€19.73

-81% vs Steam RRP

F.E.A.R. 3

Steam RRP€19.99

BuyCheapKeys key€3.84

Gears Tactics

Steam€29.99

BuyCheapKeys key€34.35

-61% vs Steam RRP

Serious Sam HD: The First Encounter

Steam RRP€14.99

BuyCheapKeys key€5.90

-69% vs Steam RRP

Quasimorph

Steam RRP€24.99

BuyCheapKeys key€7.82

-87% vs Steam RRP

Rebel Galaxy

Steam RRP€19.99

BuyCheapKeys key€2.51

-65% vs Steam RRP

Sins of a Solar Empire II

Steam RRP€50.99

BuyCheapKeys key€17.60

-40% vs Steam RRP

HighFleet

Steam RRP€24.99

BuyCheapKeys key€14.99

-66% vs Steam RRP

Zero Escape: The Nonary Games

Steam RRP€24.99

BuyCheapKeys key€8.57

-56% vs Steam RRP

CRISIS CORE –FINAL FANTASY VII– REUNION

Steam RRP€49.99

BuyCheapKeys key€22.05

-57% vs Steam RRP

Vanquish

Steam RRP€19.99

BuyCheapKeys key€8.57

-48% vs Steam RRP

SD GUNDAM G GENERATION CROSS RAYS

Steam RRP€39.99

BuyCheapKeys key€20.65

-80% vs Steam RRP

Heat Signature

Steam RRP€12.99

BuyCheapKeys key€2.55

-4% vs Steam RRP

Defy Gravity Extended

Steam RRP€1.99

BuyCheapKeys key€1.91

-73% vs Steam RRP

The Final Station

Steam RRP€14.79

BuyCheapKeys key€3.99

-6% vs Steam RRP

S.T.A.L.K.E.R.: Shadow of Chornobyl - Enhanced Edition

Steam RRP€19.99

BuyCheapKeys key€18.75

-60% vs Steam RRP

VVVVVV

Steam RRP€4.99

BuyCheapKeys key€1.99

-85% vs Steam RRP

AMID EVIL

Steam RRP€19.49

BuyCheapKeys key€3.01

-76% vs Steam RRP

Bridge Constructor Portal

Steam RRP€9.99

BuyCheapKeys key€2.36

-38% vs Steam RRP

Void Crew

Steam RRP€24.99

BuyCheapKeys key€15.45

-79% vs Steam RRP

SteamWorld Dig

Steam RRP€9.99

BuyCheapKeys key€2.05

-70% vs Steam RRP

Turbo Overkill

Steam RRP€17.19

BuyCheapKeys key€5.19

-80% vs Steam RRP

UnderRail

Steam RRP€14.79

BuyCheapKeys key€2.90

-88% vs Steam RRP

Duke Nukem Forever

Steam RRP€19.99

BuyCheapKeys key€2.38

-49% vs Steam RRP

E.Y.E: Divine Cybermancy

Steam RRP€9.75

BuyCheapKeys key€4.99

-58% vs Steam RRP

Valley

Steam RRP€12.49

BuyCheapKeys key€5.21

-75% vs Steam RRP

The Turing Test

Steam RRP€24.50

BuyCheapKeys key€6.22

-52% vs Steam RRP

EARTH DEFENSE FORCE 6

Steam RRP€59.99

BuyCheapKeys key€28.93

-79% vs Steam RRP

Starbase

Steam RRP€32.99

BuyCheapKeys key€6.86

-94% vs Steam RRP

DAEMON X MACHINA

Steam RRP€49.99

BuyCheapKeys key€3.11

Not on Steam

Red Faction Guerrilla Steam Edition

Steam—

BuyCheapKeys key€7.17

-52% vs Steam RRP

Out There Somewhere

Steam RRP€9.75

BuyCheapKeys key€4.67

-85% vs Steam RRP

Necromunda: Hired Gun

Steam RRP€39.99

BuyCheapKeys key€6.18

-79% vs Steam RRP

Space Rangers HD: A War Apart

Steam RRP€14.99

BuyCheapKeys key€3.22

-69% vs Steam RRP

Axiom Verge

Steam RRP€17.99

BuyCheapKeys key€5.60

-64% vs Steam RRP

ANNO: Mutationem

Steam RRP€20.99

BuyCheapKeys key€7.60

-79% vs Steam RRP

Distance

Steam RRP€20.99

BuyCheapKeys key€4.35

Not on Steam

Space Hulk: Deathwing

Steam—

BuyCheapKeys key€6.76

-55% vs Steam RRP

Prehistoric Kingdom

Steam RRP€24.99

BuyCheapKeys key€11.25

-17% vs Steam RRP

Ion Fury

Steam RRP€24.99

BuyCheapKeys key€20.86

-44% vs Steam RRP

MechWarrior 5: Clans

Steam RRP€28.99

BuyCheapKeys key€16.35

MOTORSLICE

Steam RRP€19.50

BuyCheapKeys key€27.57

-76% vs Steam RRP

Crashlands

Steam RRP€14.79

BuyCheapKeys key€3.49

-79% vs Steam RRP

Prodeus

Steam RRP€24.99

BuyCheapKeys key€5.36

Bit Blaster XL

Steam RRP€0.99

BuyCheapKeys key€1.82

-17% vs Steam RRP

Shadowrun: Dragonfall - Director's Cut

Steam RRP€14.99

BuyCheapKeys key€12.43

-95% vs Steam RRP

Homeworld 3

Steam RRP€59.99

BuyCheapKeys key€2.88