| Title | Publisher | Year | Language | Documents |
|---|---|---|---|---|
| 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 Black Staff | Gavin Barker | 1983 | English | |
| Inca Curse | Artic Computing, Paxman Promotions, Real Software | 1981 | English | Map, Solution, Hints |
| Intelligence Service Adventure | Antarctic Computing |
? | English |