| Spirit Revenge (ver. 1.0.9703) | yenrab | 1997-03-23 |
| 356 |
| Short-Lived Adventures of Hobo Dan, The | hob nado ◪ | 2005-12-15 |
| 311 |
| Snarfoogle | cheezit200 ◪ | |
| 277 |
| Shadowsong | Tixus/Esdemo1/Quasar84 | 2002-07-06 |
| 227 |
| Smiley RPG | Mallo | 1997-12-23 |
| 197 |
| Spongko's Legendary Journey Demo | Eon Entertainment | |
| 188 |
| Smash Time | Castlevania ◪ | |
| 188 |
| Seiken Densetsu: Blade of Islan | djtiesto ◪ | 1997-08-14 |
| 178 |
| Super Mario for MZX Demo (ver. 1.26) | T-Bone ◪ | 2006-12-03 | No reviews. | 177 |
| Spaceman Jones in: Ordeal on Glaxnard XIV (ver. 1.85) | KKairos ◪ | 2014-01-24 |
| 169 |
| Slave Pit | CHEZZY ◪ | 2006-12-31 |
| 166 |
| Stupid Tournament | hob nado ◪ | 2006-11-14 |
| 163 |
| SPECIAL QUEST! | Kuddy ◪ | 2005-04-01 |
| 151 |
| Stronghold Demo | Jauhis ◪ | 2010-01-31 |
| 147 |
| Super ASCII MZX Town! Part I (ver. 2.1) | zzo38 ◪ | | No reviews. | 141 |
| Snarfoogle 2: Warp (ver. Demo 2) | cheezit200 ◪ | |
| 135 |
| Snake Slayer 2013 (ver. 1.1) | KKairos ◪ | 2013-12-26 |
| 131 |
| Sivion (unfinished) | Monthigos ◪ | 1997-10-27 |
| 122 |
| Shining Legend Demo | Waka | |
| 114 |
| Spirit Quest (ver. 2.0) | ThDPro ◪ | 2012-07-24 | No reviews. | 110 |
| Sivion Demo II | Monthigos ◪ | |
| 107 |
| Sonic Jam (ver. 0.8) | Zdrmonster1 ◪ | 2021-11-30 |
| 106 |
| Super Mario Miniatures Demo | T-Bone ◪ | 2006-06-20 |
| 105 |
| Silence in the Theater | ThDPro ◪ | 2012-08-03 | No reviews. | 97 |
| Super Zero 2 | Static76 | |
| 95 |
| SMZX Tetris | Akwende ◪ | | No reviews. | 94 |
| Search, The | Easton Blue ◪ | 2001-11-04 |
| 94 |
| Slimed! Demo (ver. 0.3) | Creator | |
| 94 |
| Scribbit's Mini Game | Scribbit | |
| 94 |
| SimStapler | weasel ◪ | 2009-01-20 |
| 93 |
| Skateboard Dudes | Aeon17 ◪ | |
| 93 |
| Sivion Preview | Monthigos ◪ | |
| 92 |
| Survival Challenge, The | KirbySSB ◪ | 2002-11-19 |
| 91 |
| Siphrian | Kayin/RoSS/Koji | 2001-07-21 |
| 89 |
| Sudoku Simulator | nooodl ◪ | 2009-06-03 | No reviews. | 88 |
| Some Stupid Quests (ver. 2) | Kuddy ◪ | 2010-01-15 |
| 88 |
| Silent Thunder Demo | Zoox 1 & 2 | |
| 88 |
| Starflight MZX (Project Dump) | Risu2112 ◪ | 2019-01-28 | No reviews. | 87 |
| Simply Psycho | Jairska | 1995-11-22 |
| 86 |
| SEU | BiGBuBBa ◪ | | No reviews. | 86 |
| Servo | Graham ◪ | 2003-04-20 | No reviews. | 85 |
| Saga of Dan Demo | Nash ◪ | | No reviews. | 84 |
| SATAN | Baby Bonnie Hood ◪ | 2012-07-06 | No reviews. | 83 |
| Second Search, The | Easton Blue ◪ | 2002-01-02 | No reviews. | 83 |
| Stones and Roks II | zombieguy ◪ | 2003-05-03 |
| 83 |
| School Sucks Demo | Teevee | |
| 83 |
| Smiley Fighter | Ben Sargo | |
| 83 |
| SimStapler HD | hayashi ◪ | 2009-01-21 |
| 81 |
| Shooting Game Demo | Nytar ◪ | 2006-12-16 |
| 81 |
| Sacred Gem Demo | Pancake ◪ | 2006-05-29 |
| 81 |
