| Title |
Publisher |
Year |
Language |
Documents |
| One That Got Away, The |
Leon Lin |
1995 |
English |
Solution |
| One Way Out |
Steffen Görzig |
2017 |
English |
|
| One Week |
Papillon |
2001 |
English |
|
| Onirische Garten, Der |
Dara |
2018 |
German |
|
| Only After Dark |
Gunther Schmidl |
1999 |
English |
Solution, Map |
| Only Possible Prom Dress, The |
Jim Aikin |
2022 |
English |
Map |
| OnNoEf |
Evin Robertson |
1999 |
English |
Solution, Map |
| Ontsnapping uit Colditz |
? |
? |
Dutch |
Solution, Map |
| Ontsnapping, De |
Alex Dijkstra |
1996 |
Dutch |
Solution |
| Onyton Adventures, The |
Leversoft |
1987 |
English |
|
| Onyx |
Utopia Software [1]  |
1990 |
Czech |
|
| Oo-topos |
Penguin Software , Sentient Software [1]  |
1981 |
English |
Solution |
| Oostwest 3 |
Cobrasoft |
2010 |
Dutch |
|
| Ooze - Als die Geister Murbe Wurden |
Ariolasoft, Dragonware |
1988 |
German |
Solution |
| Ooze: Creepy Nites |
Dragonware |
1989 |
English |
Solution |
| Opal Lily, The |
McGraw-Hill Book Company UK |
1984 |
English |
Solution |
| Opaline |
Interactive Technology  |
1990 |
English |
|
| Open Door, The |
Tartan Software  |
1987 |
English |
Solution, Map |
| Opening Night |
David Batterham |
2008 |
English |
|
| Opera House |
Bignose Software |
1984 |
English |
Solution, Hints |
| Operacion : Operacion |
Krac |
2000 |
Spanish |
|
| Operacion Conquista |
Pepsi Soft |
1992 |
Spanish |
|
| Operation Aquatrash |
Pro Hackers Dynasty |
1997 |
English |
|
| Operation Berlin |
Wrightchoice Software |
1987 |
English |
Solution, Map, Hints |
| Operation Blue Sunrise |
Colin Campbell  |
1990 |
English |
|
| Operation Colossus |
Omega Software |
1985 |
English |
Solution, Map |
| Operation Extraction |
Ming-Yee Iu |
2011 |
English |
|
| Operation Feuersturm |
Markt & Technik, Power Games |
1988 |
German |
Solution |
| Operation Hawaii |
Golden Games |
1986 |
German |
Solution, Map |
| Operation Hongkong |
Golden Games |
1986 |
German |
Solution |
| Operation Kristos |
Computer and Video Games |
1986 |
English |
Solution |
| Operation Mainframe |
Argus Specialist Publications, Home Computing Weekly |
1985 |
English |
|
| Operation Neptun |
Happy Software , Markt & Technik |
1985 |
German |
Solution, Map, Hints |
| Operation Nightingale |
Softly Softly |
1985 |
English |
Solution, Map |
| Operation Roman Gaul |
SpecSoft  |
1984 |
English |
Solution, Map |
| Operation Sabotage |
? |
1983 |
English |
|
| Operation Safras |
Shards Software |
1983 |
English |
Solution |
| Operation SOS |
Nightingale Software |
1985 |
English |
|
| Operation Stallion |
Wrightchoice Software |
1987 |
English |
Solution |
| Operation Thunderbowel |
Sacred Scroll Software |
1988 |
English |
Solution, Map, Hints |
| Operation Thunderstorm |
Softwarehaus R. Lindenschmidt |
? |
German |
Solution, Map |
| Operation Turtle |
Pocket Money Software  |
1984 |
English |
Solution, Map |
| Operation: Novatari |
? |
? |
English |
|
| Operation: Ocean Master |
Falsoft Inc  |
1988 |
English |
|
| Operation: Sabotage |
Guild Adventure Software, The , SoftSide Publications  |
1982 |
English |
Solution, Map, Fixed game |
| Operazione Ladro |
Arcadia S.r.l., Load 'n' Run  |
1986 |
Italian |
Solution, Map |
| Ophir |
Mountain Valley Software  |
? |
English |
|
| Opium |
Ludia |
1985 |
French |
|
| Opposite Edge of Slumber |
Artem Flo |
2020 |
English |
Solution, Map |
| Oppositely Opal |
Buster Hudson |
2015 |
English |
|