Shortest Trip to Earth
Steam: $25.99GOG: $5.99
Siege Survival: Gloria Victis
Steam: $24.99GOG: $2.49
Siege Survival: Gloria Victis Prologue
Steam: FreeGOG: Free
Sigma Theory: Global Cold War
Steam: $17.99GOG: $5.45
SimCity™ 3000 Unlimited
Steam: $4.99GOG: $4.99
SimCity™ 4 Deluxe Edition
Steam: $19.99GOG: $4.99
SimplePlanes
Steam: $12.99GOG: $4.55
SIMULACRA
Steam: $4.99GOG: $9.99
SIMULACRA 2
Steam: $7.99GOG: $9.99
SIMULACRA 3
Steam: $9.99GOG: $9.99
Singularity
Steam: FreeGOG: $9.89
Sins of a Solar Empire II
Steam: $49.99GOG: $49.99
Sins of a Solar Empire®: Rebellion
Steam: $19.99GOG: Free
Six Ages 2: Lights Going Out
Steam: $24.99GOG: $16.25
Six Ages: Ride Like the Wind
Steam: $19.99GOG: $8.99
Sky Haven Tycoon - Airport Simulator
Steam: $19.49GOG: $2.89
Slay the Princess — The Pristine Cut
Steam: $17.99GOG: $17.99
Slime Rancher
Steam: $19.99GOG: $4.99
Slime Rancher 2
Steam: $29.99GOG: $4.99
Smart City Plan
Steam: $15.99GOG: $7.49
Smelter
Steam: $19.99GOG: $5.99
Smugglers 5
Steam: FreeGOG: Free
Smugglers 5: Invasion
Steam: FreeGOG: Free
Snowtopia: Ski Resort Builder
Steam: $24.99GOG: $6.25