| Title | Publisher | Year | Language | Documents |
|---|---|---|---|---|
| I Dare You | Adventure Workshop, The |
1992 | English | Solution |
| Idiliar | Grupo Creators Union | 1991 | Spanish | |
| Infiltrator, The | Zenobi Software |
1989 | English | Solution, Map |
| Into the Mystic | River Software | 1991 | English | Solution |
| Intruder Alert | Compass Software |
1989 | English | Solution |
| Invaders From Planet X | Compass Software |
1991 | English | Solution |
| Invasion Luna | Rafael Vico Costa | 1991 | Spanish | |
| Investigations | Graphtext 128 | 1987 | English | Solution, Map |
| Isla del Tesoro, La | 3PSOFT | 1991 | Spanish | |
| Island, The | Ken Bond | 1989 | English | Solution, Map |
| Islands of Sinbad, The | Zenobi Software |
1997 | English | Solution, Hints |
| ISS Emergency! | John Leonard |
2018 | English | Solution |