| Space Pirates and Zombies 2 | MinMax Games | 6/10 | |
| Space Run Galaxy | Focus Home | 6/10 | |
| Spacejacked | Rotten Mage | 5/10 | |
| Spaceland | Tortuga Team | 8/10 | |
| SpeedRunners | tinybuild | 8/10 | |
| SpellForce 3 | THQ Nordic | 6/10 | |
| Spirits | Spaces of Play UG | 5/10 | |
| SpiritSphere | Eendhoorn Games | 8/10 | |
| Spyro Reignited Trilogy | Activision | 7/10 | |
| Star Nomad | Huy Phan | 4/10 | |
| Star Renegades | Raw Fury Games | 6/10 | |
| Star Wars Battlefront | EA | 5/10 | |
| Star Wars Battlefront: Battle of Jakku | EA | 6/10 | |
| Star Wars: Rogue Squadron 3D | LucasArts | 7/10 | |
| Stardew Valley | Chucklefish | 9/10 | |
| StarDrive 2 | Iceberg | 6/10 | |
| Starpoint Gemini 2 | Iceberg | 6/10 | |
| Starpoint Gemini 2 | Iceberg | 7/10 | |
| Stars in Shadow: Legacies | Iceberg | 7/10 | |
| Startopia | Square Enix | 5/10 | |
| Starward Rogue | Arcen | 8/10 | |
| Starward Rogue: AuGMENTED | Arcen | 8/10 | |
| State of Mind | Daedalic | 5/10 | |
| STAY | PQube | 6/10 | |
| Stealth Inc. 2: A Game of Clones | Curve Digital | 2/10 | |
| SteamWorld Dig | Image & Form | 8/10 | |
| SteamWorld Dig 2 | Image & Form | 8/10 | |
| Steel & Steam: Episode 1 | Digerati Distribution | 6/10 | |
| Steel Empire | Teyon | 6/10 | |
| Steel Vampire | Henteko Doujin | 8/10 | |
| Steins;Gate | Mages. | 2/10 | |
| Steins;Gate | Mages. | 9/10 | |
| Stellaris | Paradox | 9/10 | |
| Stellaris: Apocalypse | Paradox | 5/10 | |
| Stellaris: Distant Stars | Paradox | 7/10 | |
| Stellaris: Federations | Paradox | 6/10 | |
| Stellaris: Humanoids | Paradox | 4/10 | |
| Stellaris: Leviathans | Paradox | 6/10 | |
| Stellaris: Necroids | Paradox | 3/10 | |
| Stellaris: Synthetic Dawn | Paradox | 5/10 | |
| Stellaris: Utopia | Paradox | 6/10 | |
| Steredenn | Plug In Digital | 6/10 | |
| Stikbold! A Dodgeball Adventure | Curve Digital | 8/10 | |
| Storm | Neko | 6/10 | |
| Strangeland | Wadjet Eye | 8/10 | |
| Stranger of Sword City | NIS America | 4/10 | |
| Strawberry Vinegar | Sekai Project | 6/10 | |
| Stray | Annapurna | 7/10 | |
| Street Fighter V | Capcom | 7/10 | |
| Street Fighter V: Champion Edition | Capcom | 8/10 | |
| Strobophagia | Green Tile Digital | 5/10 | |
| Stronghold Legends: Steam Edition | FireFly | 3/10 | |
| Subway Midnight | Aggro Crab | 5/10 | |
| Succubus With Guns | Satur Cat | 2/10 | |
| Sudden Strike 4 | Kalypso | 8/10 | |
| Sudeki | Zoo Digital | 5/10 | |
| Suicide Guy | Chubby Pixel | 5/10 | |
| Sun Dogs | Royal Polygon | 3/10 | |
| Sundered | Thunder Lotus | 7/10 | |
| Super Blackjack Battle II Turbo Edition: The Card Warriors | Headup | 5/10 | |
| Super Cyborg | ArturGames | 5/10 | |
| Super Hydorah | Abylight | 8/10 | |
| Super Meat Boy | Team Meat | 9/10 | |
| Super Steampunk Pinball 2D | Devonian | 6/10 | |
| Super Toy Cars | Eclipse | 6/10 | |
| Super Turbo Demon Busters! | HeroCraft | 6/10 | |
| Superdimension Neptune Vs. SEGA Hard Girls | Idea Factory | 7/10 | |
| SUPERHOT | SUPERHOT Team | 7/10 | |
| SUPERHOT VR | SUPERHOT Team | 9/10 | |
| Superliminal | Pillow Castle | 8/10 | |
| Supposedly Wonderful Future | Dmitry Zagumennov | 8/10 | |
| Supreme Commander 2 | Square Enix | 6/10 | |
| Supreme League of Patriots Issue 1 - A Patriot is Born | Phoenix Online Publishing | 4/10 | |
| Supreme League of Patriots Issue 2 - Patriot Frames | Phoenix Online Publishing | 7/10 | |
| Supreme League of Patriots Issue 3 - Ice Cold in Ellis | Phoenix Online Publishing | 5/10 | |
| Switch - Or Die Trying | Threye | 4/10 | |
| Syberia | Microids | 8/10 | |
| Syberia 3 | Microids | 4/10 | |
| Syberia II | MC2-Microids | 6/10 | |
| Syndrome | Camel 101 | 8/10 | |
| Synth Riders | Kluge | 9/10 | |
| System Shock: Enhanced Edition | Night Dive | 6/10 | |