| Title | Publisher | Year | Language | Documents |
|---|---|---|---|---|
| X Files, The Part 2: On the Ship | Upsoft Co. | 1999 | Russian | |
| XIV | Pandovisia Software | 1984 | Serbian/Croatian/Bosnian | |
| XIV/2 | Pandovisia Software | 1985 | Serbian/Croatian/Bosnian | |
| Xtroth - The Adventure | Automata UK |
1985 | English | Solution, Map |