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.

-21% vs Steam RRP

Primordia

Steam RRP€9.99

BuyCheapKeys key€7.94

-45% vs Steam RRP

Dead Rising Deluxe Remaster

Steam RRP€49.99

BuyCheapKeys key€27.29

Zombotron

Steam RRP€12.49

BuyCheapKeys key€12.73

Not on Steam

Universe Sandbox Legacy

Steam—

BuyCheapKeys key€22.64

-66% vs Steam RRP

Greedland

Steam RRP€12.79

BuyCheapKeys key€4.39

-43% vs Steam RRP

Dead Effect

Steam RRP€4.99

BuyCheapKeys key€2.85

-37% vs Steam RRP

Astrometica

Steam RRP€19.49

BuyCheapKeys key€12.22

-60% vs Steam RRP

Soda Crisis

Steam RRP€8.99

BuyCheapKeys key€3.56

-77% vs Steam RRP

Dex

Steam RRP€19.99

BuyCheapKeys key€4.67

-78% vs Steam RRP

Oddworld: New 'n' Tasty

Steam RRP€15.99

BuyCheapKeys key€3.56

-92% vs Steam RRP

Warhammer 40,000: Inquisitor - Prophecy

Steam RRP€24.99

BuyCheapKeys key€2.00

-85% vs Steam RRP

NEOVERSE

Steam RRP€16.79

BuyCheapKeys key€2.58

-88% vs Steam RRP

Black Skylands

Steam RRP€19.50

BuyCheapKeys key€2.34

-56% vs Steam RRP

Revenge of the Savage Planet

Steam RRP€29.99

BuyCheapKeys key€13.25

-90% vs Steam

Killsquad

Steam€24.99

BuyCheapKeys key€2.62

-25% vs Steam RRP

Timespinner

Steam RRP€20.49

BuyCheapKeys key€15.29

-39% vs Steam RRP

Suicide Guy

Steam RRP€5.89

BuyCheapKeys key€3.59

-76% vs Steam RRP

The Fall

Steam RRP€9.99

BuyCheapKeys key€2.39

-74% vs Steam RRP

Hyperdimension Neptunia Re;Birth2: Sisters Generation

Steam RRP€12.49

BuyCheapKeys key€3.19

Phoenotopia: Awakening

Steam€17.99

BuyCheapKeys key€20.32

-66% vs Steam RRP

Megadimension Neptunia VII

Steam RRP€19.50

BuyCheapKeys key€6.70

-28% vs Steam RRP

Space Pirates And Zombies 2

Steam RRP€19.99

BuyCheapKeys key€14.45

-75% vs Steam RRP

Occupy Mars: The Game

Steam RRP€27.99

BuyCheapKeys key€7.08

-90% vs Steam RRP

Ashes of the Singularity: Escalation

Steam RRP€30.49

BuyCheapKeys key€3.10

-81% vs Steam RRP

DG2: Defense Grid 2

Steam RRP€9.75

BuyCheapKeys key€1.82

-90% vs Steam RRP

Star Renegades

Steam RRP€24.99

BuyCheapKeys key€2.60

-94% vs Steam RRP

Distant Worlds 2

Steam RRP€48.99

BuyCheapKeys key€2.71

-75% vs Steam RRP

FortressCraft Evolved!

Steam RRP€12.99

BuyCheapKeys key€3.24

SpaceCraft

Steam RRP€29.99

BuyCheapKeys key€32.15

The Citadel

Steam RRP€12.49

BuyCheapKeys key€13.03

SpaceChem

Steam RRP€7.15

BuyCheapKeys key€7.63

-88% vs Steam RRP

Satellite Reign

Steam RRP€24.99

BuyCheapKeys key€3.11

-59% vs Steam RRP

New Cycle

Steam RRP€29.99

BuyCheapKeys key€12.44

-22% vs Steam RRP

Receiver

Steam RRP€4.99

BuyCheapKeys key€3.90

-80% vs Steam

Grey Goo

Steam€27.99

BuyCheapKeys key€5.62

-23% vs Steam RRP

Automation Empire

Steam RRP€24.99

BuyCheapKeys key€19.32

-88% vs Steam RRP

Exoprimal

Steam RRP€59.99

BuyCheapKeys key€7.05

-69% vs Steam

Vertigo 2

Steam€28.99

BuyCheapKeys key€8.94

-89% vs Steam RRP

Chaos on Deponia

Steam RRP€19.99

BuyCheapKeys key€2.25

-78% vs Steam RRP

Lifeless Planet Premier Edition

Steam RRP€9.99

BuyCheapKeys key€2.19

Eden Crafters

Steam RRP€19.50

BuyCheapKeys key€22.13

-49% vs Steam RRP

Ratz Instagib

Steam RRP€7.49

BuyCheapKeys key€3.85

-34% vs Steam RRP

Alien Shooter 2: Reloaded

Steam RRP€5.19

BuyCheapKeys key€3.44

-20% vs Steam RRP

VOID/BREAKER

Steam RRP€26.99

BuyCheapKeys key€21.65

-49% vs Steam RRP

30XX

Steam RRP€19.50

BuyCheapKeys key€9.88

-45% vs Steam RRP

Aliens versus Predator Classic 2000

Steam RRP€4.99

BuyCheapKeys key€2.74

-73% vs Steam RRP

Observer: System Redux

Steam RRP€29.99

BuyCheapKeys key€8.16

-84% vs Steam RRP

Infested Planet

Steam RRP€12.49

BuyCheapKeys key€1.99