13.12.2019
| Games | Firm / Year | Version | Sec | |
| O.K.Yah.! | Pirate'88 | Slider'13 | 121 | |
| Oberon 69 | Diabolic | Code Busters | 189 | |
| Obliterator | Melbourne House,Icon'89 | Copy Masters | 208 | |
| Obliterator | Melbourne House,Icon | Mike Blum | 173 | |
| Obliterator | Melbourne House,Icon | Kulikov D. | 155 | |
| Obliterator | Melbourne House,Icon | Flash | 162 | |
| Obliterator | Melbourne House,Icon | Slider'07 | 175 | |
| Obliterator | Icon Design, Melbourne House, Psygnosis Ltd'89 | Ros Ltd'94 | 175 | |
| Obliterator | Icon Design Ltd, Melbourne House'89 | Rapeware Corporation'95 | 146 | |
| Obliterator | Icon Design, Melbourne House, Psygnosis Ltd'89 | Alexey Vagin'94 | 245 | |
| Obliterator | Melbourne House,Icon | Flash | 159 | |
| Ocean Conqueror | Rack-It'87 | Delta Hackers Group'98 | 150 | |
| Oceano | EgoTrip'15 | tiboh'17 | 46 | |
| Octagon Squad | Mastertronic Ltd'86 | Code Reingers Group'96 | 71 | |
| Octagon Squad | Mastertronic Ltd'86 | Lone Wolf'96 | 157 | |
| Octan | Silverbird'87 | Smokers | 125 | |
| Octan | Silverbird'87 | Universe | 111 | |
| Octan | Silverbird'87 | tiboh'14 | 130 | |
| Octopussy | Bytepack, Ultrasoft'92 | FFC Computers, Softstar | 215 | |
| Octopussy | Bytepack, Ultrasoft'92 | Mafia Private Corporation'95 | 171 | |
| Octopussy | Bytepack, Ultrasoft'92 | Joker'95 | 138 | |
| Octopussy | Bytepack, Ultrasoft'92 | tiboh'18 | 192 | |
| Odd Ball | Grant Jaquest'86 | BrokImSoft | 49 | |
| Odd Job Eddie | Strobe [A Flash of Brilliance]'85 | Flash Inc'98 | 129 | |
| Oddy the Viking | Digital Brains'10 | SG'10 | 178 | |
| Official Father Christmas Game, The | Alternative,Enigma'89 | Fatality | 121 | |
| Official Father Christmas Game, The | Alternative,Enigma'89 | Syndrome'98 | 147 | |
| Official Father Christmas Game, The | Enigma Variations Ltd, Alternative Software Ltd'89 | tiboh, goodboy'17 | 98 | |
| Oh Mummy | Gem Software'84 | Korund | 23 | |
| Oink | CRL'87 | Flash | 174 | |
| OiX | Jaroslaw Cichocki'84 | n/a | 76 | |
| Ole, Toro | Dinamic Software'86 | Flash Inc'97 | 115 | |
| Ole, Toro | Dinamic Software'86 | Jupiter 77 | 110 | |
| Ole, Toro | Dinamic Software'86 | Mike Blum | 99 | |
| Olli & Lissa 1 the Ghost of Shilmoore Castle | Ionis'86 | Sliders | 97 | |
| Olli & Lissa 1 the Ghost of Shilmoore Castle | Ionis'86 | Stever,KSA | 207 | |
| Olli & Lissa 1, 2, 3 | Ionis'86-87-89 | Andrey | 466 | |
| Olli & Lissa 1, 2, 3 | Ionis'86-87-89 | Flash | 376 | |
| Olli & Lissa 2 Halloween | Ionis'87 | Sliders | 113 | |
| Olympimania | Andrew Stagg, Automata UK Ltd'84 | AmoNik / Welcome Corporation'00 | 78 | |
| Omega 1 | Mastertronic'87 | BrokImSoft | 163 | |
| Omega Zone, The | Peter Curtis'88 | Omega HC | 176 | |
| On Cue | Mastertronic'87 | tiboh'15 | 77 | |
| On Cue: Snooker | Mastertronic'87 | G.B.Max, Himik's ZxZ | 48 | |
| On Cue: Snooker | Mastertronic'87 | G.B.Max, Mukhortov'94 | 163 | |
| On Cue: Snooker | Mastertronic'87 | G.B.Max, Triumph'00 | 44 | |
| On the Run | Design Design Software'85 | Sliders Creative & Hackers Group | 119 | |
| One for the Road | IJK'86 | Flash | 35 | |
| One for the Road | IJK Software Ltd, Tynesoft'86 | Triumph'00 | 27 | |
| One for the Road | IJK Software Ltd, Tynesoft'86 | AmoNik / Welcome Corporation | 24 | |
| One Man and his Droid | Mastertronic'85 | Mike Blum | 61 | |
| One Man and His Droid 1, 2 | Clive Brooker, Mastertronic Ltd'85-01 | tiboh'17 | 133 | |
| One on One | Ariola'85 | Phantom | 72 | |
| Ooze | Bubblesoft'17 | Slider'17 | 134 | |
| Operation Gunship | Code Masters | Mike Blum | 175 | |
| Operation Gunship | Code Masters | Nikitin P. | 238 | |
| Operation Gunship | Code Masters | Hell Raisers | 182 | |
| Operation Gunship | Code Masters | BrokImSoft | 123 | |
| Operation Gunship | Code Masters | Vasilyev A. | 206 | |
| Operation Gunship | Code Masters | Stutterius | 142 | |
| Operation Gunship | Code Masters'89 | Alx | 206 | |
| Operation Gunship | Code Masters'89 | Codemonsters Hackers Group'96 | 167 | |
| Operation Gunship | Code Masters | Bitman,Byteman | 171 | |
| Operation Hanoi | Players'90 | Code Busters | 181 | |
| Operation Hanoi | Players'90 | Prestige | 181 | |
| Operation Hormuz | Again Again'89 | tiboh'15 | 267 | |
| Operation Hormuz | Again Again'89 | Ascendancy Creative Labs'97 | 163 | |
| Operation Nightingale | Softly Softly'85 | Power of Sound'97 | 168 | |
| Operation Thunderbolt | Ocean,Taito'89 | SG'11 | 337 | |
| Operation Thunderbolt | Ocean,Taito'89 | SAW | 601 | |
| Operation Thunderbolt | Ocean,Taito'89 | Vasilyev A. | 538 | |
| Operation Thunderbolt | Ocean,Taito'89 | Laptev | 545 | |
| Operation Wolf | Ocean,Taito'88 | Flash | 523 | |
| Operation Wolf | Ocean,Taito'88 | Mike Blum | 594 | |
| Operation Wolf | Ocean,Taito'88 | Power of Sound'97 | 378 | |
| Operation Wolf | Ocean,Taito'88 | MKHG | 406 | |
| Operation Wolf | Ocean,Taito'88 | SG'11 | 367 | |
| Operation Wolf | Ocean Software Ltd'88 | r0m / Seamans'96 | 467 | |
| Operation Wolf | Ocean Software Ltd'88 | Vladimir Belyaev, Anton Vasilyev'91 | 445 | |
| Operation Wolf | Ocean,Taito'88 | Trubinov S. | 467 | |
| Operation Wolf | Ocean Software Ltd'88 | Black Star Group'95 | 442 | |
| OPZ | R-Tape'18 | tiboh'18 | 66 | |
| OPZ | R-Tape'18 | ZX_Novosib'18 | 24 | |
| Orbiter | Silversoft Ltd'82 | Dimiksoft'95 | 38 | |
| Orbix the Terrorball | Streetwise'86 | Brainwave'01 | 127 | |
| Orbix the Terrorball | Streetwise'86 | Andrew Sckachek'94 | 151 | |
| Orbix the Terrorball | Streetwise'86 | AmoNik / Welcome Corporation'00 | 99 | |
| Orc Attack | Creative Sparks'84 | Lone Wolf | 105 | |
| Oriental Games | Source Software Ltd, Micro Style'90 | C.C.'91 | 545 | |
| Oriental Hero | Tron Software, Firebird Software Ltd'87 | tiboh'18 | 100 | |
| Orion | Proxima'93 | Energy Minds | 143 | |
| Orion | Software Projects Ltd'83 | Stasoft'92 | 102 | |
| Orion | Software Projects Ltd'83 | AmoNik / Welcome Corporation'00 | 31 | |
| Othello | ERE Informatique'83 | n/a | 35 | |
| Out Cast | Crl'87 | SG'08 | 139 | |
| Out of the Shadows | Mizar Computing'84 | n/a | 107 | |
| Out of this World | Bettertech,Ariola'87 | Fatality | 107 | |
| Out Run | Probe Software Ltd, US Gold'86 | Initsoft, Kano'93 | 462 | |
| Out Run | Us Gold,Sega'86 | Jupiter77 | 388 | |
| Out Run | Us Gold,Sega'86 | Skorobogatov S. | 518 | |
| Out Run | Us Gold,Sega'86 | Mike Blum | 442 | |
| Out Run | Probe Software Ltd, US Gold Ltd'87 | Monsters Productions'94 | 375 | |
| Outland | ZX Studio'14 | tiboh'14 | 92 | |
| Outlaw | Players,Infogrames,Bizzare'90 | Flash | 136 | |
| Outlaw | Players,Infogrames,Bizzare'90 | Fatality | 127 | |
| Outlaw | Players'90 | SG'10 | 124 | |
| Outrun Europa | Us Gold,Probe'91 | Oldman,MKHG | 869 | |
| Overlander | Elite'88 | Prestige | 152 | |
| Overlander | Elite'88 | Max Iwamoto | 173 | |
| Overlander | Elite'88 | Himik, Phantom | 160 | |
| Overlander | Elite Systems Ltd'88 | Maddy Vins, Phantom Family'98 | 111 | |
| Overlander | Elite Systems Ltd'88 | AmoNik / Welcome Corporation'00 | 113 | |
| Overlander | Elite'88 | Omega | 155 | |
| Overlander | Elite'88 | Reflection'95 | 184 | |
| Overlander | Elite'88 | SG'12 | 254 | |
| Overlord | Ken Wright, CCS'88 | Perestroika Software | 236 | |
| Overlord | CCS,Ken Wright'88 | RAY'97 | 98 | |
| Overlord | CCS,Ken Wright'88 | THD | 174 | |
| Overlords | MC Lothlorien Ltd'85 | n/a | 116 | |
| Virtual TR-DOS Filez Database / 119 of 8702 filez |
13.12.2019 | |||