| Sinclair ZX Spectrum cass. |  Con-Quest Model MAD 16 | 1986 | MAD Mastertronic Added Dimension |
| Sinclair ZX Spectrum cass. | Contact Sam Cruise | 1986 | Microsphere Computer Services, Ltd. |
| Sinclair ZX Spectrum cass. | Cop-Out | 1986 | Mikro-Gen UK |
| Sinclair ZX Spectrum cass. | CORE | 1986 | A&F Soft. |
| Sinclair ZX Spectrum cass. |  CORE | 1986 | Bug-Byte London, England |
| Sinclair ZX Spectrum cass. | CORE | 1986 | Argus Press Soft., Ltd. UK |
| Sinclair ZX Spectrum cass. | Cosa Nostra | 1986 | Opera Soft. Spain |
| Sinclair ZX Spectrum cass. | Cosmic Shock Absorber Model M96 | 1986 | Martech Games, Ltd. |
| Sinclair ZX Spectrum cass. | Countdown | 1986 | Macsen Soft. |
| Sinclair ZX Spectrum cass. | Countdown Model CSC 8 | 1986 | Central Solutions, Ltd. |
| Sinclair ZX Spectrum cass. | Crack It! Towers | 1986 | Mirrorsoft, Ltd. England |
| Sinclair ZX Spectrum cass. | Crash Landing | 1986 | Guild, The |
| Sinclair ZX Spectrum cass. | Crazy Pingoin Model SP-32 | 1986 | Magic Team Spain |
| Sinclair ZX Spectrum cass. | Cred Breaks Out | 1986 | TSB |
| Sinclair ZX Spectrum cass. | Crime Busters | 1986 | IJK Soft., Ltd. |
| Sinclair ZX Spectrum cass. | Crimebusters Inc | 1986 | Strobe |
| Sinclair ZX Spectrum cass. | Crystal Castles - Diamond Plateaus in Space | 1986 | US Gold, Ltd. Birmingham, England 13442 |
| Sinclair ZX Spectrum cass. | Cursed be the City | 1986 | Incantation |
| Sinclair ZX Spectrum cass. | Custerd's Quest | 1986 | Alpha-Omega Soft., Ltd. |
| Sinclair ZX Spectrum cass. | Cyberun Model 481015 | 1986 | Ultimate Play The Game |
| Sinclair ZX Spectrum cass. | Cyrox Model A-011-S48 | 1986 | Power House, The UK |
| Sinclair ZX Spectrum cass. | Cyrus II | 1986 | Alligata Soft. |
| Sinclair ZX Spectrum cass. | Dam & Blast | 1986 | IEC Soft. |
| Sinclair ZX Spectrum cass. | Dan Dare - Pilot of the Future Model VGE 1030 | 1986 | Virgin Games, Ltd. UK 013715 |
| Sinclair ZX Spectrum cass. | Dandy Model URK 613 | 1986 | Electric Dreams Soft. |
| Sinclair ZX Spectrum cass. | Dangership | 1986 | Auryn Soft. Spain |
| Sinclair ZX Spectrum cass. | Deactivators Model AS 22054 | 1986 | Reaktor UK |
| Sinclair ZX Spectrum cass. | Death in Russia 1941 | 1986 | MC Lothlorien |
| Sinclair ZX Spectrum cass. | Death in the Snow 1812 | 1986 | MC Lothlorien |
| Sinclair ZX Spectrum cass. | Deathball | 1986 | Alpha-Omega Soft., Ltd. |
| Sinclair ZX Spectrum cass. | Deep Strike Model 000303 | 1986 | Durell Soft. |
| Sinclair ZX Spectrum cass. | Defcom | 1986 | Quicksilva |
| Sinclair ZX Spectrum cass. | Dekorating Blues | 1986 | Alpha-Omega Soft., Ltd. |
| Sinclair ZX Spectrum cass. | Deltic Fleet Manager | 1986 | Dee-Kay Systems |
| Sinclair ZX Spectrum cass. | Demon from the Darkside | 1986 | Compass Soft. |
| Sinclair ZX Spectrum cass. | Desert Hawk | 1986 | Players Soft. |
| Sinclair ZX Spectrum cass. | Desperado Model CSC 6 | 1986 | Central Solutions, Ltd. |
| Sinclair ZX Spectrum cass. | Disco Dan | 1986 | Sinclair Research, Ltd. |
| Sinclair ZX Spectrum cass. | Dizzy Dice | 1986 | Players Soft. |
| Sinclair ZX Spectrum cass. | Doctor What! | 1986 | CRL Group PLC London, England |
