| Title | Publisher | Year | Language | Documents |
|---|---|---|---|---|
| I Didn't Know You Could Yodel | Andrew J. Indovina | 1998 | English | Solution |
| Igor's Quest | ? | 2020 | English | Solution, Map |
| ImagiDroids | Woodfish | 2004 | English | |
| Imposible | Enrique D. Bosch | 2000 | Spanish | |
| In Search of the Holy Grant Cheque | 16/48 Tape Magazine | 1985 | English | Solution, Hints |
| Ingrid's Back! | Level 9 Computing |
1988 | English | Solution |
| Insomnio de una Noche de Verano | Jarel |
2002 | Spanish |