03.12.2020
| Games | Firm / Year | Version | Sec | |
| O.K. Yah! | Pirate Software Ltd'88 | Slider'13 | 121 | |
| Oberon 69 | Diabolic Software, G.LL. Software S.A.'90 | Code Busters'95 | 189 | |
| Obliterator | Icon Design Ltd, Melbourne House'89 | Copy Masters | 208 | |
| Obliterator | Icon Design Ltd, Melbourne House'89 | Welcome Corporation'98 | 173 | |
| Obliterator | Icon Design Ltd, Melbourne House'89 | Dmitriy Kulikov | 155 | |
| Obliterator | Icon Design Ltd, Melbourne House'89 | Slider'07 | 175 | |
| Obliterator | Icon Design Ltd, Melbourne House'89 | Ros Ltd'94 | 175 | |
| Obliterator | Icon Design Ltd, Melbourne House'89 | Rapeware Corporation'95 | 146 | |
| Obliterator | Icon Design Ltd, Melbourne House'89 | Alexey Vagin'94 | 245 | |
| Obliterator | Icon Design Ltd, Melbourne House'89 | Flash Inc'97 | 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 (mod) | Mastertronic Ltd'86 | Lone Wolf'96 | 157 | |
| Octan | Silverbird Software Ltd'87 | Smokers Team'97 | 125 | |
| Octan | Silverbird Software Ltd'87 | Universe Software'98 | 111 | |
| Octan (pentfix) | Silverbird Software Ltd'87 | tiboh'14 | 122 | |
| Octopussy (eng) | Bytepack, Ultrasoft [sk]'92 | FFC Computers, Softstar | 215 | |
| Octopussy | Bytepack, Ultrasoft [sk]'92 | Mafia Private Corporation'95 | 171 | |
| Octopussy | Bytepack, Ultrasoft [sk]'92 | Joker'95 | 138 | |
| Octopussy (eng) (mod) | Bytepack, Ultrasoft [sk]'92 | tiboh'18 | 192 | |
| Odd Ball | The Power House'87 | Slider / BrokImSoft'02 | 49 | |
| Odd Job Eddie | Strobe [A Flash of Brilliance]'85 | Flash Inc'98 | 129 | |
| Oddi the Viking | Digital Brains'10 | SG-Team'10 | 178 | |
| Official Father Christmas Game, The | Enigma Variations Ltd, Alternative Software Ltd'89 | Fatality | 121 | |
| Official Father Christmas Game, The | Enigma Variations Ltd, Alternative Software Ltd'89 | Syndrome'98 | 147 | |
| Official Father Christmas Game, The | Enigma Variations Ltd, Alternative Software Ltd'89 | goodboy, tiboh'17 | 98 | |
| Oh Mummy | Gem Software'84 | Korund | 23 | |
| Oh Shit! (txt) (dsk) | Zack'91 | tiboh'19 | 106 | |
| Oink! | CRL Group PLC'87 | Flash Inc'97 | 174 | |
| 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, 2, 3 | Ionis Software International'86-89 | DBA'94 | 466 | |
| Olli & Lissa 1, 2, 3 | Ionis Software International'86-89 | Flash Inc'98 | 376 | |
| Olli & Lissa II: Halloween | Silverbird Software Ltd'87 | Sliders Creative & Hackers Group | 113 | |
| Olli & Lissa: The Ghost of Shilmoore Castle | Firebird Software Ltd'86 | Sliders Creative & Hackers Group | 97 | |
| Olli & Lissa: The Ghost of Shilmoore Castle (mod) | Firebird Software Ltd'86 | Megahackers Group'94 | 207 | |
| Olympicon (dsk) | Mitec'84 | tiboh'20 | 97 | |
| Olympimania | Automata UK Ltd'84 | AmoNik / Welcome Corporation'00 | 78 | |
| Omega One | Mastertronic Ltd'87 | BrokImSoft'04 | 163 | |
| Omega One | Mastertronic Ltd'87 | LAKS | 221 | |
| Omega Run | CRL Group PLC'83 | Logros Software'93 | 101 | |
| Omega Zone, The (mod) | Crash'91 | Omega Hackers Club'96 | 176 | |
| On Cue | Mastertronic Added Dimension'87 | tiboh'15 | 77 | |
| On Cue: Snooker (ita) | Mastertronic Added Dimension'87 | G.B.Max, Himik's ZxZ | 48 | |
| On Cue: Snooker (ita) | Mastertronic Added Dimension'87 | G.B.Max, Mukhortov'94 | 163 | |
| On Cue: Snooker (ita) | Mastertronic Added Dimension'87 | G.B.Max, Triumph'00 | 44 | |
| On the Run | Design Design Software'85 | Sliders Creative & Hackers Group | 119 | |
| One for the Road | IJK Software Ltd, Tynesoft'86 | Flash Inc'97 | 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 Ltd'85 | Mike Blum | 61 | |
| One Man and His Droid 1, 2 | Clive Brooker, Mastertronic Ltd'85-01 | tiboh'17 | 133 | |
| One on One | Ariolasoft UK Ltd'85 | Phantom Ltd | 72 | |
| Ooze | Bubblesoft'17 | Slider'17 | 134 | |
| Operation Gunship | Code Masters Ltd'89 | Mike Blum | 175 | |
| Operation Gunship | Code Masters Ltd'89 | Pavel Nikitin'93 | 238 | |
| Operation Gunship | Code Masters Ltd'89 | Hell Raisers'98 | 182 | |
| Operation Gunship | Code Masters Ltd'89 | Slider / BrokImSoft'02 | 123 | |
| Operation Gunship | Code Masters Ltd'89 | Anton Vasilyev | 206 | |
| Operation Gunship | Code Masters Ltd'89 | Stutterius'01 | 142 | |
| Operation Gunship | Code Masters Ltd'89 | Alx | 206 | |
| Operation Gunship | Code Masters Ltd'89 | Codemonsters Hackers Group'96 | 167 | |
| Operation Gunship | Code Masters Ltd'89 | S.Bitman, I.Byteman'93 | 171 | |
| Operation Hanoi | Players Premier'90 | Code Busters'95 | 181 | |
| Operation Hanoi | Players Premier'90 | Russian Prestige'95 | 181 | |
| Operation Hormuz | Durell Software Ltd, Again Again'89 | tiboh'15 | 267 | |
| Operation Hormuz | Durell Software Ltd, Again Again'89 | Ascendancy Creative Labs'97 | 163 | |
| Operation Nightingale (txt) (dsk) | Softly Softly'85 | Power of Sound'97 | 168 | |
| Operation Thunderbolt | Ocean Software Ltd'89 | SG-Team'11 | 337 | |
| Operation Thunderbolt | Ocean Software Ltd'89 | SAW'95 | 601 | |
| Operation Thunderbolt | Ocean Software Ltd'89 | Anton Vasilyev'91 | 538 | |
| Operation Thunderbolt | Ocean Software Ltd'89 | Laptevsoft | 545 | |
| Operation Wolf | Ocean Software Ltd'88 | Flash Inc | 523 | |
| Operation Wolf | Ocean Software Ltd'88 | Mike Blum | 594 | |
| Operation Wolf | Ocean Software Ltd'88 | Power of Sound'97 | 378 | |
| Operation Wolf | Ocean Software Ltd'88 | Mortal Kombat Hackers Group'94 | 406 | |
| Operation Wolf (pentfix) | Ocean Software Ltd'88 | SG-Team'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 Software Ltd'88 | Slava Trubinov | 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 (mod) | Creative Sparks'84 | Lone Wolf | 105 | |
| Order of Mazes, The (dsk) | Tom Dalby'15 | tiboh'20 | 88 | |
| Oriental Games | Source Software Ltd, Micro Style'90 | C.C.'91 | 545 | |
| Oriental Hero | Tron Software, Firebird Software Ltd'87 | tiboh'18 | 100 | |
| Orion | KVL Software, Proxima Software'93 | Energy Minds'98 | 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 of the Shadows | Mizar Computing'84 | n/a | 107 | |
| Out of This World | Reaktor'87 | Fatality | 107 | |
| Out Run | Probe Software Ltd, US Gold Ltd'87 | Initsoft, Kano'93 | 462 | |
| Out Run | Probe Software Ltd, US Gold Ltd'87 | Jupiter 77 | 388 | |
| Out Run | Probe Software Ltd, US Gold Ltd'87 | C.C.'91 | 518 | |
| Out Run | Probe Software Ltd, US Gold Ltd'87 | Mike Blum | 442 | |
| Out Run | Probe Software Ltd, US Gold Ltd'87 | Monsters Productions'94 | 375 | |
| Out Run Europa | Probe Software Ltd, US Gold Ltd'91 | Mortal Kombat Hackers Group'95 | 869 | |
| Outcast (pentfix) | The Zen Room, CRL Group PLC'87 | SG-Team'08 | 139 | |
| Outland | ZX Studio'14 | tiboh'14 | 92 | |
| Outlaw | Players Premier'90 | Flash Inc'98 | 136 | |
| Outlaw | Players Premier'90 | Fatality | 127 | |
| Outlaw (pentfix) | Players Premier'90 | SG-Team'10 | 124 | |
| Overlander | Elite Systems Ltd'88 | Russian Prestige'96 | 152 | |
| Overlander | Elite Systems Ltd'88 | Max Iwamoto'93 | 173 | |
| Overlander | Elite Systems Ltd'88 | Power of Sound'94 | 160 | |
| Overlander | Elite Systems Ltd'88 | Maddy Vins / Phantom Family'98 | 111 | |
| Overlander | Elite Systems Ltd'88 | AmoNik / Welcome Corporation'00 | 113 | |
| Overlander | Elite Systems Ltd'88 | Omega Hackers Group'96 | 155 | |
| Overlander | Elite Systems Ltd'88 | Reflection Group'95 | 184 | |
| Overlander | Elite Systems Ltd'88 | SG-Team'12 | 254 | |
| Overlord (dsk) | CCS'88 | Perestroika Software | 236 | |
| Overlord (dsk) | CCS'88 | Ray Software'97 | 98 | |
| Overlord (dsk) | CCS'88 | THD | 174 | |
| Overlords | MC Lothlorien Ltd'85 | n/a | 116 | |
| Virtual TR-DOS Filez Database / 122 of 9068 filez |
03.12.2020 | |||