| Title | Publisher | Year | Language | Documents |
|---|---|---|---|---|
| Castle Adventure | Keypunch Software, Micro |
1982 | English | Solution, Map |
| Castle of the Alchemists | ? | 1991 | English | |
| Caves of Dyanty, The | Nathan Fritz | 1992 | English | Solution |
| CERCLA | Jeffrey Robinson | 1993 | English | Solution |
| Cliff Diver 2: Purchase Sight Unseen | Patrick Farley | 1993 | English | Solution |
| Cliff Diver: Investigator For Hire | Patrick Farley | 1990 | English | Solution |
| Cloak of Darkness | Roger Firth | 1999 | English | Map, Solution |
| Cod Wilcox II - Pagan Puppy | Andrew J Wielochowski | ? | English | |
| CosmoServe | Judith Pintar | 1991 | English | Solution |
| Creative Cooking | Piergiorgio d' Errico |
2023 | English | |
| Crusing the Strip | Cleo Taurus |
? | English |