| Title | Publisher | Year | Language | Documents |
|---|---|---|---|---|
| Night at Milliways, A | Graeme Pletscher | 2001 | English | Solution, Map |
| Night at the XYZZYies, A | John Cater | 2001 | English | Solution, Map |
| No Earthly Use | Greg Ewing | 2000 | English | Solution, Map |
| Nostradamus's Onion Sandwich | David A. Cornelson | 1999 | English | Solution, Map |
| Not the Same Old Lang Syne | Jacqueline A. Lott | 2007 | English | Solution, Map |