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.

-66% vs Steam RRP

Warhammer 40,000: Space Marine - Master Crafted Edition

Steam RRP€39.99

BuyCheapKeys key€13.52

-18% vs Steam RRP

Super Alloy Ranger

Steam RRP€8.19

BuyCheapKeys key€6.75

-66% vs Steam RRP

Orangeblood

Steam RRP€16.79

BuyCheapKeys key€5.70

-21% vs Steam RRP

Cozy Space Survivors

Steam RRP€2.99

BuyCheapKeys key€2.35

-88% vs Steam RRP

Retreat To Enen

Steam RRP€22.99

BuyCheapKeys key€2.65

-49% vs Steam RRP

Steel Seed

Steam RRP€53.98

BuyCheapKeys key€27.28

-59% vs Steam RRP

Super Star Path

Steam RRP€4.99

BuyCheapKeys key€2.06

-79% vs Steam RRP

War of the Human Tanks

Steam RRP€9.75

BuyCheapKeys key€2.02

Not on Steam

Frozen Synapse Prime

Steam—

BuyCheapKeys key€3.75

-60% vs Steam RRP

Boiling Steel

Steam RRP€12.49

BuyCheapKeys key€5.05

-49% vs Steam RRP

Through Abandoned: The Forest

Steam RRP€5.19

BuyCheapKeys key€2.65

-80% vs Steam RRP

Attack of the Earthlings

Steam RRP€12.59

BuyCheapKeys key€2.55

-91% vs Steam RRP

Revival: Recolonization

Steam RRP€28.99

BuyCheapKeys key€2.65

-94% vs Steam RRP

Cook Serve Forever

Steam RRP€28.99

BuyCheapKeys key€1.88

Stranded

Steam RRP€0.99

BuyCheapKeys key€2.66

Aeon Command

Steam€2.99

BuyCheapKeys key€3.49

Tank Universal

Steam€4.49

BuyCheapKeys key€7.11

-34% vs Steam RRP

DERE EVIL EXE

Steam RRP€2.99

BuyCheapKeys key€1.98

-49% vs Steam

Wrack

Steam€9.99

BuyCheapKeys key€5.10

-42% vs Steam RRP

Putrefaction 2: Void Walker

Steam RRP€4.99

BuyCheapKeys key€2.88

-40% vs Steam RRP

Kingdom of Night

Steam RRP€19.50

BuyCheapKeys key€11.75

-88% vs Steam RRP

MirrorMoon EP

Steam RRP€14.99

BuyCheapKeys key€1.79

-90% vs Steam RRP

Lords of the Black Sun

Steam RRP€24.50

BuyCheapKeys key€2.46

Haydee 3

Steam RRP€28.99

BuyCheapKeys key€28.88

-85% vs Steam RRP

Möbius Front '83

Steam RRP€14.25

BuyCheapKeys key€2.10

-90% vs Steam RRP

ENCODYA

Steam RRP€24.99

BuyCheapKeys key€2.49

-84% vs Steam RRP

Sunblaze

Steam RRP€14.99

BuyCheapKeys key€2.40

-74% vs Steam RRP

Last Stop

Steam RRP€22.99

BuyCheapKeys key€5.90

Alien Marauder

Steam€16.79

BuyCheapKeys key€19.65

-90% vs Steam RRP

Ben 10: Power Trip

Steam RRP€29.99

BuyCheapKeys key€3.09

-91% vs Steam RRP

Creatures of Ava

Steam RRP€24.99

BuyCheapKeys key€2.20

-49% vs Steam RRP

Star Ores Inc.

Steam RRP€13.98

BuyCheapKeys key€7.06

-83% vs Steam RRP

Planets Under Attack

Steam RRP€11.79

BuyCheapKeys key€1.98

-53% vs Steam RRP

Stellar Warfare

Steam RRP€19.99

BuyCheapKeys key€9.47

Theseus Protocol

Steam€9.75

BuyCheapKeys key€18.35

Distant Space 2

Steam RRP€0.99

BuyCheapKeys key€1.84

-62% vs Steam RRP

Beyond Galaxyland

Steam RRP€14.99

BuyCheapKeys key€5.71

-21% vs Steam RRP

Band of Defenders

Steam RRP€9.75

BuyCheapKeys key€7.75

-46% vs Steam RRP

SaGa Emerald Beyond

Steam RRP€49.99

BuyCheapKeys key€26.76

Plazma Being

Steam€1.99

BuyCheapKeys key€2.01

-55% vs Steam RRP

MURI

Steam RRP€9.75

BuyCheapKeys key€4.41

-86% vs Steam RRP

Wantless : Solace at World’s End

Steam RRP€17.99

BuyCheapKeys key€2.44

-66% vs Steam RRP

X-COM: Enforcer

Steam RRP€4.99

BuyCheapKeys key€1.70

-65% vs Steam RRP

Mind Spheres

Steam RRP€4.99

BuyCheapKeys key€1.77

-33% vs Steam RRP

Steel Artery: Train City Builder

Steam RRP€14.99

BuyCheapKeys key€9.99

-18% vs Steam RRP

Mist Slayer

Steam RRP€7.79

BuyCheapKeys key€6.38

-56% vs Steam RRP

Ground Control II: Operation Exodus

Steam RRP€4.99

BuyCheapKeys key€2.20

-42% vs Steam RRP

Chaos Galaxy 2

Steam RRP€19.50

BuyCheapKeys key€11.36