- Spaceland: Sci-Fi Indie Tactics – v1.6.2.153 + Frontier DLC
- Spear + Bonus OST
- Spec Ops: The Line + 2 DLC + Multiplayer
- Spectator + Support the Developer DLC/Bonus Content
- Spectator 2
- Spectrolite – v1.3f
- Speed 3: Grand Prix + Windows 7 Fix
- Speedollama – Game, Art and Music, v1.3.0 + Bonus Content
- Spelldrifter
- SpellForce 3 – v1.01/Update 2
- SpellForce 3: Fallen God – Build 78754 + Bonus Content + Modding Tools
- SpellForce 3: Reforced – v82637
- SpellForce 3: Soul Harvest
- SpellForce: Conquest of Eo – v01.06.30485 + 2 DLCs
- SpellMaster: The Saga – v0.8
- SpellRogue: Gold Edition – v1.0.0b70 + Supporter Pack DLC
- Spells & Secrets – v1.01 + Bonus OST
- Spelunky 2 + Windows 7 Fix
- Sphere: Flying Cities – Save the World Edition – v1.0.5 + Bonus Content DLC
- Spider-Man: Shattered Dimensions (Steam)
- Spin Rhythm XD – v1.2 + 2 DLCs + Bonus OST
- Spintires: MudRunner – v18.10.18 + 3 DLCs
- Spintires: The Original Game – v1.7.1 + 6 DLCs
- Spiral
- Spirit City: Lofi Sessions – All-in Bundle, v1.8.0 + 3 DLCs
- Spirit Hunter: Death Mark II
- Spirit Hunters: Infinite Horde – v1.0.3443 (Release)
- Spirit Mancer: Demon Hunter Edition + 5 DLCs/Bonuses
- Spirit Oath – v1.4
- Spirit of the Island: Complete Edition – v2.1.0.2 + 2 DLCs
- Spirit of the North – Build 6112756 (Enhanced Edition Update)
- Spirit of the North 2
- Spiritfall – v1.0.05
- Spiritfarer: Farewell Edition + Bonus Content
- Spiritless Ltd. – v1.06
- Splatter
- Splice + Windows 7 Fix
- SpongeBob SquarePants: Battle for Bikini Bottom – Rehydrated – Rev. 603296 (Build 5204247 – June 23, 2020) + Multiplayer
- SpongeBob SquarePants: The Cosmic Shake – v1.0.2.0 + Costume Pack DLC
- SpongeBob SquarePants: The Patrick Star Game
- SPORE Collection – GOG DRM-free
- Sports: Renovations
- SPRAWL + Soundtrack Bundle – v1.4 + Bonus OST
- Spray Paint Simulator – Revision 1829
- SPY×ANYA: Operation Memories – Deluxe Edition, v1.0.5 + 5 DLCs
- Spyro Reignited Trilogy
- Squad 51 vs. the Flying Saucers
- Squirrel with a Gun – v1.5.10.0
- Squirreled Away
- Squirrelmageddon! – v894