Ever thing on the list is 1 key each!!

Alan Wake

Alan Wake's American Nightmare

AquaNox

Darwinia

Red Faction: Armageddon

Uplink

Unmechanical

Mass Effect 2

Guilty Gear Isuka

Street Racing Syndicate

Adventure Apes And Mayan Mystery

Shattered Haven Tidalis

Blackwell Convergence, Blackwell Legacy, Blackwell Unbound

Blackwell Deception

Cognition - Episode 1

Darwinia, Multiwinia, Defcon, Uplink - Trust Is A Weakness

Dungeons of Dredmor

Eleusis

FairyBloom Freesia

Fibrillation

Gimbal

Guncraft = 1 key

Hacker Evolution

Hacker Evolution Duality

Hacker Evolution Untold

Kill Fun Yeah

Aquaria

Fractal

some are on steam some are not