| Title | Publisher | Year | Language | Documents |
|---|---|---|---|---|
| Ice World War | Kit Domenico | 1981 | English | Solution, Map |
| In Search of Trash Island | Roger M. Wilcox |
1981 | English | Solution, Map |
| In the Universe Beyond | Roger M. Wilcox |
1981 | English | Solution, Map |
| India Palace | Roger M. Wilcox |
1980 | English | Solution, Map |
| Infidel | Infocom |
1983 | English | Solution, Map, Hints |
| Input Adventure | Input Magazine | 1984 | English | Solution, Map, Hints |
| Institute, The | Med Systems |
1981 | English | Solution, Map |
| Interstellar War | Roger M. Wilcox |
1981 | English | Solution, Map |
| Irvin Kaputz | ? | ? | English | |
| Island Adventure | CLOAD |
1981 | English | Solution, Map |
| Island of Secrets | Usborne Publishing | 1984 | English | Solution |
| It Takes a Thief | Randy Dobkin | 1981 | English | |
| It's About Time... | SoftSide Publications |
1983 | English | Solution, Map |