Person - Costello, Matthew J.

Items with "Costello, Matthew J." as Credited Author

Call of Cthulhu

Alone Against the Dark

Crossroads Adventures

3. Robert Silverberg's Majipoor: Revolt on Majipoor
14. Robert Heinlein's Glory Road: Fate's Trick

Cthulhu

Allein gegen die Dunkelheit

DC Heroes

Hex: Escort to Hell
Wheel of Destruction

Fantasy Gamer

The Thing in the Darkness

GAMES

Escape from Horror Island
The Paradox Labyrinth

Lone Wolf and Cub Game

Lone Wolf and Cub Game

Marvel Super Heroes Adventure Gamebooks (American)

8. Daredevil: Guilt by Association

Proteus Books Novels

The 7th Guest

Role Aids

Final Challenge

Sniper! Adventure Gamebooks

4. KGB Doublecross