| Sinclair ZX Spectrum cass. |  Jet Bike Simulator Model 9063 | 1988 | Codemasters Soft. Co., Ltd., The 015026 |
| Sinclair ZX Spectrum cass. |  Joe Blade | 1988 | Players Soft. |
| Sinclair ZX Spectrum cass. | Joe Blade II | 1988 | Players Soft. |
| Sinclair ZX Spectrum cass. | Karate Ace | 1988 | Star Games 013658 |
| Sinclair ZX Spectrum cass. | Karnov | 1988 | Electric Dreams Soft. |
| Sinclair ZX Spectrum cass. | Kikstart 2 Model IS 0188 | 1988 | Mastertronic, Ltd. UK 012967 |
| Sinclair ZX Spectrum cass. | Knightmare Model RAS039 | 1988 | Ricochet Mastertronic Group UK |
| Sinclair ZX Spectrum cass. | Konami's Arcade Collection Model 112232 P | 1988 | Imagine Soft. Ocean Group 13156 |
| Sinclair ZX Spectrum cass. | Kung-Fu Knights Model TSTE 50 | 1988 | Top Ten Soft. |
| Sinclair ZX Spectrum cass. | La Abadia del Crimen | 1988 | Opera Soft. Spain |
| Sinclair ZX Spectrum cass. | La Corona Model 1 STY 237 | 1988 | SPE Spain |
| Sinclair ZX Spectrum cass. | La Guerra de las Vajillas Model SPE880010 | 1988 | Dinamic Soft. Madrid, Spain |
| Sinclair ZX Spectrum cass. | Lancelot | 1988 | Mandarin Soft. |
| Sinclair ZX Spectrum cass. | Laser Squad | 1988 | Blade Soft. |
| Sinclair ZX Spectrum cass. | Laser Squad - Expansion Kit One | 1988 | Blade Soft. |
| Sinclair ZX Spectrum cass. | Last Ninja 2 | 1988 | System 3 Soft., Ltd. |
| Sinclair ZX Spectrum cass. | Leader Board Tournament | 1988 | US Gold, Ltd. Birmingham, England 13442 |
| Sinclair ZX Spectrum cass. | Leader Board Model 542019 | 1988 | Kixx 013442 |
| Sinclair ZX Spectrum cass. | League Challenge Model AT 335 | 1988 | Atlantis Soft. |
| Sinclair ZX Spectrum cass. | LED Storm Model 539088 | 1988 | GO! Media Holdings, Ltd. 13442 |
| Sinclair ZX Spectrum cass. | Lee Enfield Space Ace | 1988 | Infogrames Interactive, Inc. 329720 |
| Sinclair ZX Spectrum cass. | Light Force Model 010649 | 1988 | Rack-It 012635 |
| Sinclair ZX Spectrum cass. | Lightning Simulator | 1988 | Silverbird Soft. 012439 |
| Sinclair ZX Spectrum cass. | Live and Let Die Model 301-8 | 1988 | Domark Group, Ltd. |
| Sinclair ZX Spectrum cass. | Lo Mejor de Dinamic | 1988 | Dinamic Soft. Madrid, Spain |
| Sinclair ZX Spectrum cass. | Load'N'Run No. 45 | 1988 | MK Periodici snc Italy |
| Sinclair ZX Spectrum cass. | Load'N'Run No. 46 | 1988 | MK Periodici snc Italy |
| Sinclair ZX Spectrum cass. | Load'N'Run No. 47 | 1988 | MK Periodici snc Italy |
| Sinclair ZX Spectrum cass. | Load'N'Run No. 48 | 1988 | MK Periodici snc Italy |
| Sinclair ZX Spectrum cass. | Load'N'Run No. 49 | 1988 | MK Periodici snc Italy |
| Sinclair ZX Spectrum cass. | Load'N'Run No. 50 | 1988 | MK Periodici snc Italy |
| Sinclair ZX Spectrum cass. | Load'N'Run No. 51 | 1988 | MK Periodici snc Italy |
| Sinclair ZX Spectrum cass. | Load'N'Run No. 52 | 1988 | MK Periodici snc Italy |
| Sinclair ZX Spectrum cass. | Load'N'Run No. 53 | 1988 | MK Periodici snc Italy |
| Sinclair ZX Spectrum cass. | Load'N'Run No. 54 | 1988 | MK Periodici snc Italy |
| Sinclair ZX Spectrum cass. | Load'N'Run No. 55 | 1988 | MK Periodici snc Italy |
| Sinclair ZX Spectrum cass. | Locodriver 4 | 1988 | Greenup, Ashley |
| Sinclair ZX Spectrum cass. | Locodriver 5 | 1988 | Greenup, Ashley |
| Sinclair ZX Spectrum cass. | Locodriver 6 | 1988 | Greenup, Ashley |
| Sinclair ZX Spectrum cass. | Locodriver 7 | 1988 | Greenup, Ashley |
