| Stix Demo (ver. 2) | Glynth | 1999-10-21 | No reviews. | 75 |
| Shadow Hunters | Chaos88 ◪ | 2015-08-18 | No reviews. | 75 |
| Shoot 'Em! | Tyler "Crackerjack" McDonald | |
| 76 |
| Star Wars | Joshua Booth | |
| 76 |
| Super World | Bugspray | |
| 77 |
| Slider Puzzle | RatoN ◪ | 2005-06-06 | No reviews. | 77 |
| Shadowblade | Fred ◪ | |
| 77 |
| Space Station 2: Planetary Warp (demo) | Sonic1126 ◪ | 2000-08-21 |
| 79 |
| Spoder Road | Nemesis^ | 1997-07-23 |
| 79 |
| Starfighters | Xzavier R | |
| 79 |
| Stones and Roks (ver. 1.3) | zombieguy ◪ | 2003-11-01 | No reviews. | 80 |
| Sonic's Quest | Sonic64 | |
| 80 |
| Super Chuck | Brian Palmer | |
| 81 |
| Super Zero | Static76 | | No reviews. | 81 |
| Sacred Gem Demo | Pancake ◪ | 2006-05-29 |
| 81 |
| Shooting Game Demo | Nytar ◪ | 2006-12-16 |
| 81 |
| SimStapler HD | hayashi ◪ | 2009-01-21 |
| 81 |
| Shining Billy | Billy of America | 1998-06-00 |
| 82 |
| Smiley Fighter | Ben Sargo | |
| 83 |
| School Sucks Demo | Teevee | |
| 83 |
| Stones and Roks II | zombieguy ◪ | 2003-05-03 |
| 83 |
| Second Search, The | Easton Blue ◪ | 2002-01-02 | No reviews. | 83 |
| SATAN | Baby Bonnie Hood ◪ | 2012-07-06 | No reviews. | 83 |
| Saga of Dan Demo | Nash ◪ | | No reviews. | 84 |
| Servo | Graham ◪ | 2003-04-20 | No reviews. | 86 |
| Simply Psycho | Jairska | 1995-11-22 |
| 86 |
| SEU | BiGBuBBa ◪ | | No reviews. | 87 |
| Starflight MZX (Project Dump) | Risu2112 ◪ | 2019-01-28 | No reviews. | 87 |
| Silent Thunder Demo | Zoox 1 & 2 | |
| 88 |
| Some Stupid Quests (ver. 2) | Kuddy ◪ | 2010-01-15 |
| 88 |
| Sudoku Simulator | nooodl ◪ | 2009-06-03 | No reviews. | 88 |
| Siphrian | Kayin/RoSS/Koji | 2001-07-21 |
| 89 |
| Survival Challenge, The | KirbySSB ◪ | 2002-11-19 |
| 91 |
| Sivion Preview | Monthigos ◪ | |
| 92 |
| Skateboard Dudes | Aeon17 ◪ | |
| 93 |
| SimStapler | weasel ◪ | 2009-01-20 |
| 93 |
| Scribbit's Mini Game | Scribbit | |
| 94 |
| Slimed! Demo (ver. 0.3) | Creator | |
| 94 |
| Search, The | Easton Blue ◪ | 2001-11-04 |
| 94 |
| SMZX Tetris | Akwende ◪ | | No reviews. | 94 |
| Super Zero 2 | Static76 | |
| 95 |
| Silence in the Theater | ThDPro ◪ | 2012-08-03 | No reviews. | 97 |
| Super Mario Miniatures Demo | T-Bone ◪ | 2006-06-20 |
| 105 |
| Sivion Demo II | Monthigos ◪ | |
| 107 |
| Sonic Jam (ver. 0.8) | Zdrmonster1 ◪ | 2021-11-30 |
| 108 |
| Spirit Quest (ver. 2.0) | ThDPro ◪ | 2012-07-24 | No reviews. | 110 |
| Shining Legend Demo | Waka | |
| 114 |
| Sivion (unfinished) | Monthigos ◪ | 1997-10-27 |
| 122 |
| Snake Slayer 2013 (ver. 1.1) | KKairos ◪ | 2013-12-26 |
| 131 |
| Snarfoogle 2: Warp (ver. Demo 2) | cheezit200 ◪ | |
| 135 |
