| Title | Publisher | Year | Language | Documents |
|---|---|---|---|---|
| Ultimo Acto | Josep Coletas Caubet | 2005 | Spanish | Map |
| Under Cover of Darkness | Christopher Huang | 2000 | English | Solution, Map |
| Unhallowed | Blerkotron | 2018 | English | Solution, Map |
| Uninvited | Icom Simulations, Mindscape | 1986 | English | Solution, Map |
| Urban | Zenobi Software |
1991 | English | Solution, Hints |