- Stars In The Trash: Deluxe Edition – Build 20241208 + Bonus Content
- Starsand: Digital Supporter Edition – v1.0.9 + Bonus Content
- Starship Troopers: Terran Command – Complete Bundle, v3.0.1 + 2 DLCs
- Starstruck: Hands of Time + Soundtrack Bundle
- Stasis: Bone Totem + Supporters Pack Combo, v1.0.4.3 + Bonus Content
- State of Decay 2: Juggernaut Edition – v38 / 724522 + DLC
- State of Decay: Year-One Survival Edition
- State of Mind
- Station to Station – v1.4.1 (4960) / Creative Mode Update
- Status One
- Stay Still 2 + Bonus OST
- Steam Squad
- SteamWorld Build: Deluxe Edition – Build 13541592 + Mechanized DLC
- SteamWorld Heist II – v1.3 + Bonus Soundtrack + Windows 7 Fix
- Steel Division 2: Total Conflict Edition – v103263 + 30 DLCs
- Steel Division: Normandy 44 – Build 80629
- Steel Echoes
- Steel Rats + DLC
- Steelrising + 2 DLCs
- STEINS;GATE – Steam HD Edition
- Steins;Gate 0
- Steins;Gate Elite
- STEINS;GATE: Linear Bounded Phenogram
- STEINS;GATE: My Darling’s Embrace
- Stellar Ghosts Settlers – v1.0.220
- Stellar Sovereigns
- Stellaris: Ultimate Bundle, v3.13.0 (e62b) + 37 DLCs/Bonuses
- STERN – v1.4.2
- Still Wakes the Deep – v1.2 (31049)
- Stolen Realm – v1.0.0b9
- Stonedeep – v2021.10.09.0
- STORY OF SEASONS: A Wonderful Life + 2 DLCs + Windows 7 Fix
- Story of Seasons: Pioneers of Olive Town
- Storyteller: Soundtrack Edition – v1.0.8 + Bonus OST
- STRAFE: Gold Edition – v1.4 + Bonus OST
- Stranded Deep – v1.0.6.0.17 Release
- Strange Brigade: Deluxe Edition – v1.47.22.14 + 10 DLCs + Multiplayer
- Strangeland – v3.0 + Bonus Soundtrack
- STRANGER + VR – v1.0.5 + v0.9.8
- Stranger of Paradise: Final Fantasy Origin – v1.30 + 4 DLCs + Bonus OST + Multiplayer
- Stranger of Sword City
- Stranglehold – v1.1 GOG/31068
- Strategic Mind: Blitzkrieg
- Strategic Mind: Collection (The Pacific v3.08, Blitzkrieg v1.26, Spectre of Communism v1.10)
- Strategic Mind: Fight for Freedom
- Strategic Mind: Spectre of Communism
- Strategic Mind: Spirit of Liberty – v1.0.1
- Strategic Mind: The Pacific – v3.01
- Strawhart
- Stray Blade – Build 12682948 + Valley of Strays DLC