| Title | Publisher | Year | Language | Documents |
|---|---|---|---|---|
| I.T. - Das Abenteuer des Jahrhunderts | Birkhäuser Verlag | 1984 | German | Solution, Map |
| I.T. - de Adventure van de Eeuw | Omikron | 1983 | Dutch | Solution, Map |
| I.T. - The Adventure of the Century | Addison-Wesley Publishers |
1983 | English | Solution, Map |
| In Search of: The Four Vedas | American Software Design & Distribution | 1982 | English | Solution, Map |
| Infidel | Infocom |
1983 | English | Solution, Map, Hints |
| Investigator, The | Lucille F. Rock | ? | English | |
| Island Adventure | Apex Trading | 1982 | English | |
| Isola Perduta, L' | ? | ? | Italian |