| Title | Publisher | Year | Language | Documents |
|---|---|---|---|---|
| Sardoria | Anssi Räisänen | 2003 | English | Solution, Map |
| Saviour | Thomas Nilsson | 1997 | English | |
| Sealed Room, The | Robert DeFord | 2012 | English | |
| Secret in the Mithraeum, The | Eric Mayer | 1999 | English | Solution, Map |
| Skipping Breakfast | Stephen Griffiths | 1999 | English | Solution |
| Songbird, the Woman and the Silver Casket, The | Taryn Quinn | 2015 | English | |
| SpeedIF 11, part six | Mikko Vuorinen | 2000 | English | Solution |
| Story of Morris the Chicken Being Helped by a Squirrel, The | Mikko Vuorinen | 1998 | English |