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.

Rhythm Doctor

Steam RRP€19.50

BuyCheapKeys key€21.45

-83% vs Steam RRP

Risk of Rain Returns

Steam RRP€14.99

BuyCheapKeys key€2.60

-43% vs Steam RRP

Mindustry

Steam RRP€9.99

BuyCheapKeys key€5.67

-69% vs Steam RRP

Sonic Adventure 2

Steam RRP€9.99

BuyCheapKeys key€3.11

Call of Duty®: Black Ops II

Steam€39.99

BuyCheapKeys key€45.30

-85% vs Steam RRP

Quantum Break

Steam RRP€36.99

BuyCheapKeys key€5.50

-73% vs Steam RRP

BATTLETECH

Steam RRP€39.99

BuyCheapKeys key€10.66

-84% vs Steam RRP

Serious Sam 3: BFE

Steam RRP€28.99

BuyCheapKeys key€4.66

-64% vs Steam RRP

Pacific Drive

Steam RRP€29.99

BuyCheapKeys key€10.94

-49% vs Steam RRP

ATRI -My Dear Moments-

Steam RRP€17.63

BuyCheapKeys key€9.06

-57% vs Steam RRP

The Forever Winter

Steam RRP€28.99

BuyCheapKeys key€12.34

Gears 5

Steam€29.99

BuyCheapKeys key€47.75

-62% vs Steam RRP

XCOM®: Chimera Squad

Steam RRP€9.99

BuyCheapKeys key€3.79

-77% vs Steam RRP

High On Life

Steam RRP€36.49

BuyCheapKeys key€8.30

-74% vs Steam RRP

Borderlands Game of the Year

Steam RRP€29.99

BuyCheapKeys key€7.75

-51% vs Steam RRP

FINAL FANTASY X/X-2 HD Remaster

Steam RRP€24.99

BuyCheapKeys key€12.26

-90% vs Steam RRP

Warhammer 40,000: Inquisitor - Martyr

Steam RRP€49.99

BuyCheapKeys key€4.97

-90% vs Steam RRP

Hardspace: Shipbreaker

Steam RRP€34.99

BuyCheapKeys key€3.65

-34% vs Steam RRP

Roboquest

Steam RRP€24.99

BuyCheapKeys key€16.41

-67% vs Steam RRP

Into the Breach

Steam RRP€14.99

BuyCheapKeys key€4.99

-77% vs Steam RRP

Dome Keeper

Steam RRP€17.99

BuyCheapKeys key€4.19

ORION: Prelude

Steam€0.99

BuyCheapKeys key€2.99

-54% vs Steam RRP

Project Wingman

Steam RRP€24.99

BuyCheapKeys key€11.40

-77% vs Steam RRP

Warhammer 40,000: Space Marine - Anniversary Edition

Steam RRP€35.99

BuyCheapKeys key€8.24

-64% vs Steam RRP

Far Cry 3 - Blood Dragon

Steam RRP€14.99

BuyCheapKeys key€5.41

-55% vs Steam RRP

Mechabellum

Steam RRP€14.79

BuyCheapKeys key€6.67

-70% vs Steam RRP

Finding Paradise

Steam RRP€9.75

BuyCheapKeys key€2.94

-62% vs Steam RRP

Wolfenstein: The Old Blood

Steam RRP€19.99

BuyCheapKeys key€7.69

-52% vs Steam RRP

Fallout 3

Steam RRP€9.99

BuyCheapKeys key€4.80

-71% vs Steam RRP

Viscera Cleanup Detail

Steam RRP€12.79

BuyCheapKeys key€3.66

-54% vs Steam RRP

Machinarium

Steam RRP€19.99

BuyCheapKeys key€9.18

-86% vs Steam RRP

Wasteland 3

Steam RRP€33.99

BuyCheapKeys key€4.91

-59% vs Steam RRP

Hacknet

Steam RRP€9.75

BuyCheapKeys key€3.98

-63% vs Steam RRP

Crysis Remastered

Steam RRP€29.99

BuyCheapKeys key€11.24

-57% vs Steam RRP

Fallout: A Post Nuclear Role Playing Game

Steam RRP€9.99

BuyCheapKeys key€4.25

-58% vs Steam RRP

Terminator: Resistance

Steam RRP€39.99

BuyCheapKeys key€16.60

-82% vs Steam RRP

Killing Floor 3

Steam RRP€39.99

BuyCheapKeys key€7.25

-72% vs Steam RRP

CrossCode

Steam RRP€19.99

BuyCheapKeys key€5.67

-43% vs Steam RRP

FINAL FANTASY® XIII

Steam RRP€12.99

BuyCheapKeys key€7.38

Not on Steam

Boundary

Steam—

BuyCheapKeys key€13.95

-15% vs Steam RRP

SpaceEngine

Steam RRP€28.99

BuyCheapKeys key€24.69

-80% vs Steam RRP

Trepang2

Steam RRP€29.99

BuyCheapKeys key€5.90

-74% vs Steam RRP

Warhammer 40,000: Boltgun

Steam RRP€21.99

BuyCheapKeys key€5.67

-15% vs Steam RRP

Hyper Light Drifter

Steam RRP€14.99

BuyCheapKeys key€12.74

Not on Steam

Mass Effect 2 (2010 Edition)

Steam—

BuyCheapKeys key€6.86

-59% vs Steam RRP

Nuclear Nightmare

Steam RRP€6.89

BuyCheapKeys key€2.84

-58% vs Steam RRP

The Alters

Steam RRP€34.99

BuyCheapKeys key€14.77

-85% vs Steam RRP

Aliens: Dark Descent

Steam RRP€39.99

BuyCheapKeys key€5.83