Games - O - Horror (14 results)
| Title | Publisher | Year | Language | Documents |
|---|---|---|---|---|
| Obituario | Santiago Eximeno | 2002 | Spanish | |
| Ocaso Mortal | Dhan | 2001 | Spanish | |
| Occult Connection, The | David Munden | 1993 | English | |
| October 31st | Finn Rosenløv | 2022 | English | Solution |
| Old Fogey | Simon Deimel | 2015 | English | |
| Old Sherwood Cemetary, The | Duchess | 2002 | English | Solution, Map |
| One Dark Night | Paul Brunyee | 1988 | English | Solution, Map |
| One Eye Open | Carolyn VanEseltine, Colin Sandel | 2010 | English | |
| Only After Dark | Gunther Schmidl | 1999 | English | Solution, Map |
| Ooze - Als die Geister Murbe Wurden | Ariolasoft, Dragonware | 1988 | German | Solution |
| Ooze: Creepy Nites | Dragonware | 1989 | English | Solution |
| Oriental | Load 'n' Run  |
1986 | Italian | Solution, Map |
| Ork! House of Fortune | Brett Walker | 1989 | English | Map, Hints |
| Orson Powell: Lycanthropus | Viking |
1987 | Italian | Solution |