| Star Trip | Thundercloud ◪ | |
| 89 |
| Stolen Zambooboo Demo, The (ver. 1.2) | Brandon Faegre | 1996-11-27 |
| 82 |
| S.W.A.T. | Bramble ◪ | 2004-03-02 |
| 96 |
| SK8 2004 Demo | Switchblade ◪ | |
| 87 |
| Stair Dismount | Slinky ◪ | |
| 126 |
| Smiley Wars Test | GetDizzy ◪ | 2004-06-10 |
| 91 |
| Stemilt | Bramble ◪ | 2005-12-13 |
| 77 |
| Sivion Preview | Monthigos ◪ | |
| 128 |
| Sacred Gem Demo | Pancake ◪ | 2006-05-29 |
| 105 |
| Secret Demo | Pancake ◪ | 2006-07-17 |
| 97 |
| Serrated Episode Zero: Confrontation | Pancake ◪ | 2006-06-14 |
| 92 |
| Simply Psycho | Jairska | 1995-11-22 |
| 117 |
| Star Wars | Joshua Booth | |
| 109 |
| SmallGame (ver. 1.1) | hayashi ◪ | 2007-10-12 |
| 89 |
| Sonic's Quest | Sonic64 | |
| 100 |
| SimStapler HD | hayashi ◪ | 2009-01-21 |
| 106 |
| Swords Demo | zjm ◪ | 2008-06-02 |
| 70 |
| Shadowsong 2 Demo | Tixus/Esdemo1/Wervyn | |
| 93 |
| Sonic Jam (ver. 0.8) | Zdrmonster1 ◪ | 2021-11-30 |
| 172 |
| Shocked Demo | Pancake ◪ | 2006-07-22 |
| 87 |
| Shadowed | Joseph Toscano | 1997-01-01 |
| 94 |
| Silent Thunder Demo | Zoox 1 & 2 | 1999-01-19 |
| 117 |
| Smiley Fighter | Ben Sargo | |
| 108 |
| Space Station (demo) | Sonic1126 ◪ | 2000-03-29 |
| 92 |
| Spy Guy 2 | Aeon17 ◪ | |
| 89 |
| Super Chuck | Brian Palmer | |
| 107 |
| Shoot 'Em! | Tyler "Crackerjack" McDonald | |
| 99 |
| Ski 2004 | Switchblade ◪ | |
| 94 |
| Starfighters | Xzavier R | |
| 103 |
| Super Mario Miniatures Demo | T-Bone ◪ | 2006-06-20 |
| 144 |
| Shloober Stockpile 2: BrainFart | ShloobeR ◪ | 2008-01-01 |
| 75 |
| SimStapler | weasel ◪ | 2009-01-20 |
| 123 |
| Sivion Demo II | Monthigos ◪ | |
| 137 |
| Some Stupid Quests (ver. 2) | Kuddy ◪ | 2010-01-15 |
| 134 |
| Scribbit's Mini Game | Scribbit | |
| 125 |
| Sivion (unfinished) | Monthigos ◪ | 1997-10-27 |
| 160 |
| Slimed! Demo (ver. 0.3) | Creator | |
| 122 |
| Spoder Road | Nemesis^ | 1997-07-23 |
| 103 |
| Super Zero 2 | Static76 | |
| 153 |
| Snarfoogle 2: Warp (ver. Demo 2) | cheezit200 ◪ | 1998-01-15 |
| 175 |
| Search, The | Easton Blue ◪ | 2001-11-04 |
| 122 |
| Siphrian | Kayin/RoSS/Koji | 2001-07-21 |
| 109 |
| Stealth Boy Demo | Fighter_Phil ◪ | 2005-03-15 |
| 82 |
| Silence | weasel ◪ | 2005-09-08 |
| 89 |
| Squirm Wars 2 (Demo) | T-Bone ◪ | 2006-06-17 |
| 95 |
| Shooting Game Demo | Nytar ◪ | 2006-12-16 |
| 108 |
| Substance | Bramble ◪ | 2009-05-04 |
| 80 |
| Stargate | Lachesis ◪ | 2011-09-21 |
| 83 |
| sleepdrm failure files (ver. 0.2) | KKairos ◪ | 2017-01-31 |
| 70 |
| Smash Time | Castlevania ◪ | |
| 228 |
