| Title |
Publisher |
Year |
Language |
Documents |
| Oxygen |
Benjamin Sokal |
2010 |
English |
Solution |
| Oxygen |
Hansi Berlin |
2015 |
English |
|
| Oxbridge |
Tynesoft |
1986 |
English |
Solution, Hints |
| Owl Consults, The |
Cidney Hamilton, Nick Mathewson, Thomas Mack |
2017 |
English |
|
| Overlord |
Elise C. Boucher (Zosia the Pious)  |
1986 |
English |
Solution |
| Overheard! |
Grim Reaper, The |
1992 |
English |
|
| Overdog |
Mega-Soft [2] |
1989 |
English |
Solution |
| Over Here! |
Lionel Ange |
2020 |
English |
Solution, Map, Hints |
| Outsided |
Chad Elliott |
1999 |
English |
Solution |
| Outcasts, The |
Dmitry Ivanushko |
2017 |
English |
|
| Out of Your Wits |
Fantasy Software |
? |
English |
|
| Out of the Study |
Anssi Räisänen |
2002 |
English |
Solution, Map |
| Out of the Limelight |
WoW Software , Zenobi Software |
1992 |
English |
Solution, Map |
| Out Of Line |
Cody Gaisser |
2022 |
English |
|
| Out For the Count |
Richard Forster |
? |
English |
|
| Out |
Viktor Sobol |
2019 |
English |
|
| Our Boys in Uniform |
Megan Stevens |
2013 |
English |
|
| Oth. |
Gunther Schmidl |
2002 |
English |
Solution, Map |
| Orpington |
William J. Shlaer |
1998 |
English |
|
| Ork! House of Fortune |
Brett Walker |
1989 |
English |
Map, Hints |
| Orion Quest, The |
Argus Press Software, Mind Games |
1984 |
English |
Solution, Map |
| Orion Agenda, The |
Ryan Weisenberger |
2004 |
English |
|
| Origins |
Ade McT |
2016 |
English |
|
| Original Adventure, The |
Norell Data Systems , Software Toolworks |
1982 |
English |
Solution, Map |
| Origin of Madame Time, The |
Brian Rushton |
2018 |
English |
|
| Orifice From Outer Space, The |
Plasma Touch Software |
1989 |
English |
Solution, Hints |
| Orientation to Van Pelt Library |
Richard Young |
? |
English |
|
| Oric Adventure |
Tevward Microtech |
? |
English |
|
| Organ Grinder's Monkey, The |
Garry Francis |
2025 |
English |
Solution, Map |
| Orevore Courier |
Brian Rapp |
2007 |
English |
|
| Order |
John Evans |
2004 |
English |
|
| Orc's Siege |
? |
? |
English |
Solution, Map |
| Orc Slayer |
Gamma Software |
1984 |
English |
Solution, Map |
| Orc Island |
Bogussoft |
1984 |
English |
Solution, Map, Hints |
| Orbs of Derra, The |
Coco-Cassette, T&D Subscription Software |
1989 |
English |
|
| Orbit of Doom |
Central Solutions |
1986 |
English |
Solution, Map |
| Orb, The |
A&B Computing |
1986 |
English |
Solution |
| Orb Quest |
Guild Adventure Software, The , WoW Software |
1991 |
English |
Solution, Map |
| Orb of Power |
Poseidon Software , Trident Technological Systems |
1985 |
English |
Solution, Map |
| Orb of Light, The |
Wilson Software |
? |
English |
Solution |
| Orb |
Impact Software |
1982 |
English |
Map, Hints |
| Orathan |
Paul Allen Panks |
2003 |
English |
|
| Oracle, The |
Brandon Allen |
2002 |
English |
Solution |
| Oracle |
Crystal Microsoft |
1983 |
English |
Solution, Map |
| Oppressed Land, The |
Zenobi Software |
1990 |
English |
Solution, Hints |
| Oppositely Opal |
Buster Hudson |
2015 |
English |
|
| Opposite Edge of Slumber |
Artem Flo |
2020 |
English |
Solution, Map |
| Ophir |
Mountain Valley Software |
? |
English |
|
| Operation: Sabotage |
Guild Adventure Software, The , SoftSide Publications |
1982 |
English |
Solution, Map, Fixed game |
| Operation: Ocean Master |
Falsoft Inc |
1988 |
English |
|
