| Some Stupid Quests (ver. 2) | Kuddy ◪ | 2010-01-15 |
| 91 |
| Some | RakiSoft | |
| 72 |
| Snowman Smash | Triterra | |
| 61 |
| Snarfoogle 2: Warp (ver. Demo 2) | cheezit200 ◪ | |
| 138 |
| Snarfoogle | cheezit200 ◪ | |
| 280 |
| Snakes 2000 | Alan Iversen | |
| 68 |
| Snake Slayer 2013 (ver. 1.1) | KKairos ◪ | 2013-12-26 |
| 132 |
| SMZX Tetris | Akwende ◪ | | No reviews. | 97 |
| Smiley Wars Test | GetDizzy ◪ | 2004-06-10 |
| 64 |
| Smiley RPG | Mallo | 1997-12-23 |
| 197 |
| Smiley Knights | Triterra | |
| 64 |
| Smiley Fighter | Ben Sargo | |
| 83 |
| Smash Time | Castlevania ◪ | |
| 188 |
| SmallGame (ver. 1.1) | hayashi ◪ | 2007-10-12 |
| 66 |
| Slimed! Demo (ver. 0.3) | Creator | |
| 94 |
| Slider Puzzle | RatoN ◪ | 2005-06-06 | No reviews. | 77 |
| sleepdrm failure files (ver. 0.2) | KKairos ◪ | 2017-01-31 |
| 47 |
| Slave Pit | CHEZZY ◪ | 2006-12-31 |
| 167 |
| Ski 2004 | Switchblade ◪ | |
| 68 |
| Skateboard Dudes | Aeon17 ◪ | |
| 93 |
| SK8 2004 Demo | Switchblade ◪ | |
| 66 |
| Sivion Preview | Monthigos ◪ | |
| 93 |
| Sivion Demo II | Monthigos ◪ | |
| 110 |
| Sivion (unfinished) | Monthigos ◪ | 1997-10-27 |
| 122 |
| Siphrian | Kayin/RoSS/Koji | 2001-07-21 |
| 89 |
| SimStapler HD | hayashi ◪ | 2009-01-21 |
| 81 |
| SimStapler | weasel ◪ | 2009-01-20 |
| 94 |
| Simply Psycho | Jairska | 1995-11-22 |
| 86 |
| Silent Thunder Demo | Zoox 1 & 2 | |
| 89 |
| Silent Death Demo | Razerboy ◪ | |
| 65 |
| Silence: Revised Edition | weasel ◪ | 2007-01-15 | No reviews. | 64 |
| Silence in the Theater | ThDPro ◪ | 2012-08-03 | No reviews. | 99 |
| Silence | weasel ◪ | 2005-09-08 |
| 70 |
| Sid's Quest (Incomplete) | MattSplatW ◪ | 2006-10-29 | No reviews. | 63 |
| Short-Lived Adventures of Hobo Dan, The | hob nado ◪ | 2005-12-15 |
| 311 |
| Shooting Game Demo | Nytar ◪ | 2006-12-16 |
| 82 |
| Shoot 'Em! | Tyler "Crackerjack" McDonald | |
| 77 |
| Shocked Demo | Pancake ◪ | 2006-07-22 |
| 69 |
| Shock and Awe and a Whimper | pbl.fyi ◪ | 2017-04-26 | No reviews. | 36 |
| Shloober Stockpile 2: BrainFart | ShloobeR ◪ | 2008-01-01 |
| 57 |
| Shloober Stockpile 1: ClockTower | ShloobeR ◪ | 2008-01-01 | No reviews. | 63 |
| Shining Legend Demo | Waka | |
| 114 |
| Shining Billy | Billy of America | 1998-06-00 |
| 82 |
| Shadowsong 2 Demo | Tixus/Esdemo1/Wervyn | |
| 65 |
| Shadowsong | Tixus/Esdemo1/Quasar84 | 2002-07-06 |
| 227 |
| Shadowed | Joseph Toscano | 1997-01-01 |
| 74 |
| Shadowblade | Fred ◪ | |
| 80 |
| Shadow Hunters | Chaos88 ◪ | 2015-08-18 | No reviews. | 82 |
| SEU | BiGBuBBa ◪ | | No reviews. | 87 |
| Servo | Graham ◪ | 2003-04-20 | No reviews. | 86 |
