Frank Maddin is a games designer. Maddin has been working with 3D Realms, 3D Realms (Apogee Software), Devolver Digital and General Arcade. Maddin started in 1991 as the designer of Crystal Caves. Next, Frank Maddin worked on Monster Bash taking on the role of designer. Later, Maddin also was part of the team who developed Shadow Warrior Classic published by 3D Realms for PC, macOS and Linux. Most recently, Frank Maddin was involved in the development of Shadow Warrior Classic Redux.