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.

Among Us

Steam RRP€4.49

BuyCheapKeys key€4.56

-19% vs Steam RRP

ARK: Survival Evolved

Steam RRP€14.79

BuyCheapKeys key€12.01

Lethal Company

Steam€9.75

BuyCheapKeys key€11.99

-65% vs Steam RRP

Portal 2

Steam RRP€9.75

BuyCheapKeys key€3.46

R.E.P.O.

Steam RRP€9.49

BuyCheapKeys key€9.62

-78% vs Steam RRP

Subnautica

Steam RRP€29.99

BuyCheapKeys key€6.50

-66% vs Steam RRP

No Man's Sky

Steam RRP€58.99

BuyCheapKeys key€19.88

-65% vs Steam RRP

Deep Rock Galactic

Steam RRP€29.99

BuyCheapKeys key€10.61

-25% vs Steam RRP

ARC Raiders

Steam RRP€39.99

BuyCheapKeys key€29.91

-48% vs Steam RRP

Fallout 4

Steam RRP€19.99

BuyCheapKeys key€10.46

-75% vs Steam RRP

Titanfall® 2

Steam RRP€29.99

BuyCheapKeys key€7.36

-29% vs Steam RRP

Satisfactory

Steam RRP€38.99

BuyCheapKeys key€27.82

-78% vs Steam RRP

Detroit: Become Human

Steam RRP€39.99

BuyCheapKeys key€8.65

-26% vs Steam RRP

Fallout: New Vegas

Steam RRP€9.99

BuyCheapKeys key€7.41

-90% vs Steam RRP

Borderlands 2

Steam RRP€44.99

BuyCheapKeys key€4.31

-12% vs Steam RRP

RimWorld

Steam RRP€31.99

BuyCheapKeys key€28.21

-65% vs Steam RRP

Half-Life 2

Steam RRP€9.75

BuyCheapKeys key€3.46

-61% vs Steam RRP

DOOM Eternal

Steam RRP€29.99

BuyCheapKeys key€11.76

-65% vs Steam RRP

Portal

Steam RRP€9.75

BuyCheapKeys key€3.46

-68% vs Steam RRP

Warhammer 40,000: Space Marine 2

Steam RRP€59.99

BuyCheapKeys key€18.96

-50% vs Steam RRP

Stray

Steam RRP€28.49

BuyCheapKeys key€14.24

-67% vs Steam RRP

DOOM

Steam RRP€19.99

BuyCheapKeys key€6.67

-71% vs Steam RRP

Stellaris

Steam RRP€49.99

BuyCheapKeys key€14.49

-61% vs Steam RRP

Oxygen Not Included

Steam RRP€22.99

BuyCheapKeys key€8.90

-53% vs Steam RRP

Black Mesa

Steam RRP€19.50

BuyCheapKeys key€9.14

-77% vs Steam RRP

Kerbal Space Program

Steam RRP€36.99

BuyCheapKeys key€8.41

-74% vs Steam RRP

ASTRONEER

Steam RRP€29.99

BuyCheapKeys key€7.74

-81% vs Steam RRP

Metro Exodus

Steam RRP€29.99

BuyCheapKeys key€5.76

-62% vs Steam RRP

Half-Life

Steam RRP€8.19

BuyCheapKeys key€3.12

Subnautica 2

Steam€29.99

BuyCheapKeys key€34.35

-22% vs Steam RRP

Starfield

Steam RRP€49.99

BuyCheapKeys key€39.14

-15% vs Steam RRP

Brotato

Steam RRP€4.99

BuyCheapKeys key€4.25

-87% vs Steam RRP

BioShock Infinite

Steam RRP€29.99

BuyCheapKeys key€3.90

-70% vs Steam RRP

ARK: Survival Ascended

Steam RRP€44.99

BuyCheapKeys key€13.63

-37% vs Steam RRP

S.T.A.L.K.E.R. 2: Heart of Chornobyl

Steam RRP€59.99

BuyCheapKeys key€38.04

-60% vs Steam RRP

Outlast

Steam RRP€14.79

BuyCheapKeys key€5.91

-46% vs Steam RRP

Subnautica: Below Zero

Steam RRP€29.99

BuyCheapKeys key€16.20

-39% vs Steam RRP

Outer Wilds

Steam RRP€22.99

BuyCheapKeys key€14.12

-78% vs Steam RRP

Starbound

Steam RRP€14.99

BuyCheapKeys key€3.34

-5% vs Steam RRP

Dyson Sphere Program

Steam RRP€16.79

BuyCheapKeys key€16.00

-69% vs Steam RRP

Elite Dangerous

Steam RRP€19.99

BuyCheapKeys key€6.24

-77% vs Steam RRP

XCOM® 2

Steam RRP€19.99

BuyCheapKeys key€4.69

-29% vs Steam RRP

METAL GEAR SOLID V: THE PHANTOM PAIN

Steam RRP€29.99

BuyCheapKeys key€21.26

-84% vs Steam RRP

Metro: Last Light Redux

Steam RRP€19.99

BuyCheapKeys key€3.10

-2% vs Steam

METAL GEAR RISING: REVENGEANCE

Steam€19.99

BuyCheapKeys key€19.66

-40% vs Steam RRP

The Planet Crafter

Steam RRP€23.99

BuyCheapKeys key€14.44

-49% vs Steam RRP

Dune: Awakening

Steam RRP€49.99

BuyCheapKeys key€25.63

-45% vs Steam RRP

Katana ZERO

Steam RRP€14.79

BuyCheapKeys key€8.18