| Sinclair ZX Spectrum cass. |  Guardian Angel | 1990 | Codemasters Soft. Co., Ltd., The 015026 |
| Sinclair ZX Spectrum cass. |  Guardian II - Revenge of the Mutants Model HT 012 | 1990 | Hi-Tec Soft. |
| Sinclair ZX Spectrum cass. | Gunboat - River Combat Simulation | 1990 | Accolade Europe, Ltd. London, England 020622 |
| Sinclair ZX Spectrum cass. |  Gunship Model SE566 | 1990 | Erbe Soft. Spain |
| Sinclair ZX Spectrum cass. | Gwain the Haffling | 1990 | Panic Soft. Spain |
| Sinclair ZX Spectrum cass. | Hammerfist | 1990 | Activision, Inc. Menlo Park, CA, USA 47875 |
| Sinclair ZX Spectrum cass. | Havoc | 1990 | Players Premier |
| Sinclair ZX Spectrum cass. | Heavy Metal | 1990 | US Gold, Ltd. Birmingham, England 13442 |
| Sinclair ZX Spectrum cass. | Henrietta's Book of Spells | 1990 | Scetlander |
| Sinclair ZX Spectrum cass. | Heresville | 1990 | Wazertown Works Spain |
| Sinclair ZX Spectrum cass. | Heroes | 1990 | Domark Group, Ltd. |
| Sinclair ZX Spectrum cass. | Hollywood Collection | 1990 | Ocean Soft., Ltd. 13156 |
| Sinclair ZX Spectrum cass. | Hong Kong Phooey Model HT043 | 1990 | Hi-Tec Soft. |
| Sinclair ZX Spectrum cass. | Hooray for Henrietta | 1990 | Scetlander |
| Sinclair ZX Spectrum cass. | Hostages | 1990 | Infogrames Interactive, Inc. 329720 |
| Sinclair ZX Spectrum cass. | Hostages | 1990 | Erbe Soft. Spain |
| Sinclair ZX Spectrum cass. | Hot Rod | 1990 | Activision, Inc. Menlo Park, CA, USA 47875 |
| Sinclair ZX Spectrum cass. | Ice Breaker Model SE 589 | 1990 | Topo Soft. Spain |
| Sinclair ZX Spectrum cass. | Impossamole Model 021377 | 1990 | Gremlin Graphics Soft., Ltd. 013658 |
| Sinclair ZX Spectrum cass. | Impossible Mission II | 1990 | Kixx 013442 |
| Sinclair ZX Spectrum cass. | In Deep | 1990 | R&H Microtec |
| Sinclair ZX Spectrum cass. | Indiana Jones and the Temple of Doom Model 545928 | 1990 | Kixx 013442 |
| Sinclair ZX Spectrum cass. | Interalia - Cerius II Model AT 359X | 1990 | Atlantis Soft. |
| Sinclair ZX Spectrum cass. | International 3D Tennis | 1990 | Palace Soft. 013518 |
| Sinclair ZX Spectrum cass. | International Cricket on Tour - One Day | 1990 | Lambourne Games |
| Sinclair ZX Spectrum cass. | Invasion Force | 1990 | CCS Cases Computer Simulations, Ltd. London, England |
| Sinclair ZX Spectrum cass. | Island of Chaos | 1990 | Guild, The |
| Sinclair ZX Spectrum cass. | Italian Supercar Model 2259 | 1990 | Codemasters Soft. Co., Ltd., The 015026 |
| Sinclair ZX Spectrum cass. | Italy 1990 | 1990 | US Gold, Ltd. Birmingham, England 13442 |
| Sinclair ZX Spectrum cass. | Ivan 'Ironman' Stewart's Super Off Road | 1990 | Virgin Games, Ltd. UK 013715 |
| Sinclair ZX Spectrum cass. | Jack the Nipper | 1990 | Kixx 013442 |
| Sinclair ZX Spectrum cass. | Jack the Nipper II In Coconut Capers Model 546604 | 1990 | Kixx 013442 |
| Sinclair ZX Spectrum cass. | Jackson City | 1990 | GLL Soft. Spain |
| Sinclair ZX Spectrum cass. | James Bond 007 Action Pack | 1990 | Amstrad PLC |
| Sinclair ZX Spectrum cass. | Jason of the Argonauts | 1990 | Guild, The |
| Sinclair ZX Spectrum cass. | Joystick Thunder | 1990 | Hewson Consultants, Ltd. England 012635 |
| Sinclair ZX Spectrum cass. | Jungle Warrior Model JW-012-SPE | 1990 | Zigurat Soft. Spain |
| Sinclair ZX Spectrum cass. | Karateka | 1990 | Dro Soft. Madrid, Spain |
| Sinclair ZX Spectrum cass. | Kenny Dalglish Soccer Match | 1990 | Impressions |
| Sinclair ZX Spectrum cass. | Kick Off 2 | 1990 | Anco Soft., Ltd. |
