| Title | Publisher | Year | Language | Documents |
|---|---|---|---|---|
| Rote Mondstein, Der | ? | 1993 | German | Solution, Map, Fixed game |
| Rhesus-Negativ | Arksoft | 1988 | German | Solution, Map |
| Return to Karven | M. Baggs | 1986 | English | Solution, Map |
| Red Moon | Level 9 Computing |
1985 | English | Solution, Map, Hints, Clue sheet |
| Return to Eden | Level 9 Computing |
1984 | English | Solution, Map, Hints, Clue sheet |