| Submansion (2025) | 0 | 0 |
| Submarine (1978) | 28,471 | 21 |
| Submarine Attack (1990) | 145,289 | 241 |
| Submarine Commander (1982) | 4,293,255 | 148 |
| Submarine Survivor (2024) | 4,499 | 46 |
| Submarine Terror (2024) | 41,095 | 9 |
| Submarine Titans (2000) | 599,451 | 416 |
| SubmarineS (2002) | 16,795,759 | 159 |
| Submerged (2015) | 9,112,502 | 3,503 |
| Submerged: Hidden Depths (2020) | 1,701,304 | 3,589 |
| Submergent (2024) | 130 | 3 |
| SUBMERSIBLE (2025) | 3,595 | 4 |
| Subnautica (2018) | 3,824,381,766 | 400,546 |
| Subnautica 2 (2026) | 42,004,156 | 5,353 |
| Subnautica: Below Zero (2021) | 1,295,019,842 | 167,592 |
| SUBNET - Escape Room Adventure (2023) | 265,294 | 47 |
| Suborbital (2024) | 29,945 | 6 |
| SubRoc-3D (1982) | 35,354 | 36 |
| subROV : Underwater Discoveries (2022) | 29,416 | 51 |
| Subside (2024) | 484,009 | 200 |
| Subsideria (2018) | 20,132 | 5 |
| Subsistence (2016) | 58,387,386 | 51,272 |
| SubSpace (1997) | 801,572 | 326 |
| Subspace Continuum (2015) | 145 | 2 |
| Subspace Discovery (2023) | 399 | 5 |
| Substation (1995) | 209,956 | 73 |
| Subsunk (1985) | 1,462 | 7 |
| Subsurface Circular (2017) | 116,225 | 232 |
| Subtension (2023) | 9,810 | 1 |
| SubterAlien Rescue (2023) | 0 | 0 |
| Subterfuge (2015) | 204,163 | 79 |
| Subterrain (2016) | 1,075,134 | 1,337 |
| Subterrain: Mines of Titan (2024) | 359,809 | 305 |
| Subterranauts (2024) | 58,199 | 9 |
| Subterranean Animism (2008) | 61,727,673 | 5,374 |
| Subterranean Starfield (2013) | 1,288 | 18 |
| Subterror (2024) | 1,486,182 | 229 |
| Subtrade (1992) | 3,249 | 6 |
| Subverse (2024) | 7,226,170 | 450 |
| Subwar 2050 (1993) | 312,329 | 64 |
| Subway Scramble (2005) | 2,836 | 6 |
| Subway Surfers (2012) | 8,365,032,268 | 700,843 |
| Subway Vigilante (1989) | 45,440 | 18 |
| SubwaySim 2 (2025) | 21,121 | 31 |
| Success In Progress (2025) | 0 | 0 |
| Success Story (2009) | 118,542,102 | 892 |
| The Succession of Changing Kings (2026) | 21 | 1 |
| SUCCESSOR OF THE KEY (2020) | 3,125 | 9 |
| Successor To Your Throne (2023) | 0 | 0 |
| Succubi's Trap Dungeon of Seduction (2022) | 0 | 0 |
| Succubus 2069 (2024) | 2,831 | 22 |
| Succubus Challenge (2025) | 0 | 0 |
| Succubus Dungeon (2024) | 130 | 3 |
| Succubus Girl Story (2022) | 6 | 2 |
| Succubus Harem (2025) | 0 | 0 |
| Succubus Heaven (2024) | 1,102 | 2 |
| Succubus Hotel (2020) | 180 | 1 |
| Succubus in Wonderland (2023) | 23 | 1 |
| Succubus Melnea (2023) | 870 | 1 |
| Succubus Puttel (2024) | 0 | 0 |
| Succubus Roulette (2025) | 0 | 0 |
| Succubus Runa and the Erotic Dungeon (2021) | 501 | 4 |
| Succubus Summon (2023) | 0 | 0 |
| Succubus With Guns (2021) | 298,680 | 400 |
| Succubus's making lunch (2023) | 382 | 3 |
| Succubus: The Lustborn Curse (2026) | 0 | 0 |
| Succuquest (2023) | 8,442 | 6 |
| Such a guy (2025) | 0 | 0 |
| SuchArt: Creative Space (2021) | 342,438 | 152 |
| SuchArt: Genius Artist Simulator (2021) | 12,763,079 | 1,388 |
| Sucker for Love: Date to Die For (2024) | 4,521,233 | 733 |
| Sucker for Love: First Date (2022) | 27,327,692 | 1,706 |
| Sucks To Be In The Sticks (2026) | 0 | 0 |
| Sudden Attack (2005) | 266,690,708 | 11,945 |
| Sudden Attack 2 (2016) | 16,447,243 | 605 |
