Publications (2) 
| Title | Code | Date | Publisher | System (Setting) |
|---|---|---|---|---|
 Sandy Petersen's Cthulhu Mythos | 2019 | Petersen Games | Dungeons and Dragons | |
| Sandy Petersen's Cthulhu Mythos | 2016 | Petersen Games | Pathfinder |
| Title | Code | Date | Publisher | System (Setting) |
|---|---|---|---|---|
| Sandy Petersen's Cthulhu Mythos | 2019 | Petersen Games | Dungeons and Dragons | |
| Sandy Petersen's Cthulhu Mythos | 2016 | Petersen Games | Pathfinder |