| Title | Publisher | Year | Language | Documents |
|---|---|---|---|---|
| Imperio de la Mente, El | Antonio Márquez Marín |
2001 | Spanish | |
| Infiltration on Io | Ryan N. Freebern | 2001 | English | Solution, Map |
| Inspiration | David S. Glasser | 2001 | English | Solution, Map |
| Invasion of the Angora-fetish Transvestites From the Graveyards of Jupiter | Morten Rasmussen | 2001 | English | Solution |
| Isolato Incident, The | Alan DeNiro | 2001 | English | Solution |