| Sinclair ZX Spectrum cass. |  Country Cottages | 1984 | Sterling Soft. |
| Sinclair ZX Spectrum cass. | Crazy Caverns Model 000211 | 1984 | Firebird Soft. UK 012439 |
| Sinclair ZX Spectrum cass. | Crazy Crane | 1984 | Voyager Soft. |
| Sinclair ZX Spectrum cass. | Crib | 1984 | DJ Mutch |
| Sinclair ZX Spectrum cass. | Cribbage | 1984 | Gamma Soft. |
| Sinclair ZX Spectrum cass. | Cricket Captain | 1984 | Allanson Computing |
| Sinclair ZX Spectrum cass. | Cruse On | 1984 | Mushroomsoft |
| Sinclair ZX Spectrum cass. | Crystal Quest | 1984 | Burnard, Keith |
| Sinclair ZX Spectrum cass. | Cube | 1984 | CCS Cases Computer Simulations, Ltd. London, England |
| Sinclair ZX Spectrum cass. | Cubey | 1984 | Chad Soft. |
| Sinclair ZX Spectrum cass. | Cuddles | 1984 | 8th Day Soft. Liverpool, England |
| Sinclair ZX Spectrum cass. | Cup and Bowl | 1984 | Griffin Soft. |
| Sinclair ZX Spectrum cass. | Cybertanks | 1984 | Star Dreams |
| Sinclair ZX Spectrum cass. | Cybo Run | 1984 | Calisto |
| Sinclair ZX Spectrum cass. | Cybo Run | 1984 | Dixons |
| Sinclair ZX Spectrum cass. | Cylon Attack | 1984 | A&F Soft. |
| Sinclair ZX Spectrum cass. | D-Day | 1984 | Games Workshop |
| Sinclair ZX Spectrum cass. | Daley Thompson's Decathlon | 1984 | Ocean Soft., Ltd. 13156 |
| Sinclair ZX Spectrum cass. | Dance Fantasy | 1984 | Spinnaker Soft. Corp. |
| Sinclair ZX Spectrum cass. | Danger Mouse in the Black Forest Chateau Model TNCC231 | 1984 | Creative Sparks |
| Sinclair ZX Spectrum cass. | Dark Star + Spectacle | 1984 | Design Design Soft. |
| Sinclair ZX Spectrum cass. | Dartz | 1984 | Automata U.K., Ltd. |
| Sinclair ZX Spectrum cass. | De-Fusion + Worms | 1984 | K-Tel International, Ltd. UK |
| Sinclair ZX Spectrum cass. | Death Chess 5000 Model ASC 092 | 1984 | Artic Computing, Ltd. |
| Sinclair ZX Spectrum cass. | Death Reprieve + Time Machine | 1984 | 5D |
| Sinclair ZX Spectrum cass. | Death Star Model RSS 328 | 1984 | Rabbit Soft. |
| Sinclair ZX Spectrum cass. | Decor Wreckers | 1984 | Scorpio Soft. |
| Sinclair ZX Spectrum cass. | Deep Space | 1984 | PSS Personal Soft. Services 012484 |
| Sinclair ZX Spectrum cass. | Defenda | 1984 | Interstella Soft. |
| Sinclair ZX Spectrum cass. | Defendar | 1984 | Mikro-Gen UK |
| Sinclair ZX Spectrum cass. | Delta Wing Model TNCC191 | 1984 | Creative Sparks |
| Sinclair ZX Spectrum cass. | Demolition | 1984 | Dorling Kindersley |
| Sinclair ZX Spectrum cass. | Demon Lord | 1984 | Mansfield Computers & Electronics |
| Sinclair ZX Spectrum cass. | Der Krieg Der Welten | 1984 | CRL Group PLC London, England |
| Sinclair ZX Spectrum cass. | Deus Ex Machina | 1984 | Automata U.K., Ltd. |
| Sinclair ZX Spectrum cass. | Devil Diver | 1984 | DK Tronics |
| Sinclair ZX Spectrum cass. | Diablo King | 1984 | Cibercomp S.A. Spain |
| Sinclair ZX Spectrum cass. | Diamond Quest | 1984 | CCS Cases Computer Simulations, Ltd. London, England |
| Sinclair ZX Spectrum cass. | Dickie Diver | 1984 | Quickbeam Soft. |
| Sinclair ZX Spectrum cass. | Dinosaurs | 1984 | Piper |
