| Sinclair ZX Spectrum cass. |  Jungle Adventure | 1984 | CCS Cases Computer Simulations, Ltd. London, England |
| Sinclair ZX Spectrum cass. | Junior Maths Pack | 1984 | Micro Mart Soft. |
| Sinclair ZX Spectrum cass. | Kassette fur Benutzer | 1984 | Goldstar Soft. London, England |
| Sinclair ZX Spectrum cass. | Kentilla Model QTC 727 | 1984 | Micromega |
| Sinclair ZX Spectrum cass. | Kids On Keys | 1984 | Spinnaker Soft. Corp. |
| Sinclair ZX Spectrum cass. | Killer Knight Model PA 008 | 1984 | Phipps Associates |
| Sinclair ZX Spectrum cass. | Kindercomp | 1984 | Spinnaker Soft. Corp. |
| Sinclair ZX Spectrum cass. | King Arthur's Quest | 1984 | MacGibbon, Hill |
| Sinclair ZX Spectrum cass. | Knight Driver | 1984 | Hewson Consultants, Ltd. England 012635 |
| Sinclair ZX Spectrum cass. | Knight Lore Model 481009 | 1984 | Ultimate Play The Game |
| Sinclair ZX Spectrum cass. | Knowledge Quiz - 9-99 Yrs | 1984 | Micro-De-Bug Consultancy |
| Sinclair ZX Spectrum cass. | Koekoek-Koekoek | 1984 | Edusystems |
| Sinclair ZX Spectrum cass. | Kokotoni Wilf Model 010010 | 1984 | Elite Systems, Ltd. |
| Sinclair ZX Spectrum cass. | Kong Strikes Back | 1984 | Ocean Soft., Ltd. 13156 |
| Sinclair ZX Spectrum cass. | Kosmic Kanga | 1984 | Micromania France |
| Sinclair ZX Spectrum cass. | Kosmik Pirate | 1984 | Elephant Soft. |
| Sinclair ZX Spectrum cass. | Krakatoa | 1984 | Abbex Electronics |
| Sinclair ZX Spectrum cass. | Kung-Fu Model BBS 00117 | 1984 | Bug-Byte London, England |
| Sinclair ZX Spectrum cass. | L'Ile Maudite | 1984 | Loriciels France |
| Sinclair ZX Spectrum cass. | La Ballade du Lutin | 1984 | Loriciels France |
| Sinclair ZX Spectrum cass. | La Rana Z-Man | 1984 | Ventamatic Spain |
| Sinclair ZX Spectrum cass. | Las Cuatro En Raya + Rescate Del Tesoro | 1984 | Investronica Spain |
| Sinclair ZX Spectrum cass. | Laser II | 1984 | Video Showcase |
| Sinclair ZX Spectrum cass. | Lazer Bykes | 1984 | Wildest Dreams |
| Sinclair ZX Spectrum cass. | Lazy Jones Model TSPC-5 P | 1984 | Terminal Soft. |
| Sinclair ZX Spectrum cass. | Le Tresor du Docteur Spectradamus | 1984 | No Man's Land France |
| Sinclair ZX Spectrum cass. | Legend | 1984 | Century Soft. |
| Sinclair ZX Spectrum cass. | Leo Wanker's Quest | 1984 | Peeny Pad |
| Sinclair ZX Spectrum cass. | Les Flics Model 036 | 1984 | PSS Personal Soft. Services 012484 |
| Sinclair ZX Spectrum cass. | Liberator | 1984 | Lyversoft |
| Sinclair ZX Spectrum cass. | Lifeline Model MCL 129 | 1984 | MC Lothlorien |
| Sinclair ZX Spectrum cass. | Linkword French | 1984 | Silversoft |
| Sinclair ZX Spectrum cass. | Little Pac 2 | 1984 | Jujstronic |
| Sinclair ZX Spectrum cass. | Load'N'Run No. 1 | 1984 | MK Periodici snc Italy |
| Sinclair ZX Spectrum cass. | Load'N'Run No. 10 | 1984 | MK Periodici snc Italy |
| Sinclair ZX Spectrum cass. | Load'N'Run No. 11 | 1984 | MK Periodici snc Italy |
| Sinclair ZX Spectrum cass. | Load'N'Run No. 2 | 1984 | MK Periodici snc Italy |
| Sinclair ZX Spectrum cass. | Load'N'Run No. 3 | 1984 | MK Periodici snc Italy |
| Sinclair ZX Spectrum cass. | Load'N'Run No. 4 | 1984 | MK Periodici snc Italy |
| Sinclair ZX Spectrum cass. | Load'N'Run No. 5 | 1984 | MK Periodici snc Italy |
