
"Nightfall is approaching rapidly as you reach the deserted castle..."
STEVE JACKSON'S F.I.S.T.
In 1988 you could pick up your telephone, dial the F.I.S.T. number and you were immediately connected to a medieval fantasy world of magic, monsters and great riches to be plundered. A world where YOU were a heroic adventurer embarking on a quest for fame and fortune. F.I.S.T. was the first interactive phone game ever.
The first F.I.S.T. adventure featuring the world of Castle Mammon — Lair of the Demon Prince, created by the fertile mind of games master Steve Jackson (co-founder of Games Workshop and the Fighting Fantasy gamebook series), now returns as it was released in 1988, audio and gameplay intact, but adapted for iOS and Android using the Sound Realms system.

Introducing
F.I.S.T. Castle Mammon
The creatures and deadly traps that await you in Castle Mammon are brought to life with dramatic sound effects and new gaming techniques. You could hear the roar of the Flesh Eater as your sword bites, the sizzle of the fireball bursting towards you, the chinking of the many gold pieces you could find in the Demon Prince's underground dungeon. YOU make the decisions simply by using your mobile or tablet.
Digital game
- Play it on iOS or Android through the Sound Realms app – free to download.
- Originally released on landline phones in 1988, now available on mobile devices for the very first time.
- All original audio remastered.
- Nostalgic keypad controls.
- Combat system.
- Offline mode available – play anywhere!

Physical products
Merch
Enjoy the digital adventure of F.I.S.T. Castle Mammon with exclusive collector items.

Deluxe Box Set
Get the F.I.S.T. audio-game packed in a high-quality Deluxe Box, filled with physical items with a real old-school feeling.
Draw your map of Castle Mammon in the notebook using the F.I.S.T. pencil, wear the badges on your favorite jacket, frame the poster with the amazing cover art, send a postcard to a friend... The Deluxe Box is a must-have item for all F.I.S.T. fans!
T-shirt
The F.I.S.T. shirt is printed in full, vivid color to preserve the detail of the original artwork. The result has a clear retro feel to it, like something straight out of the old-school gamebook era. Original artwork by John Blance.

Explore the world of F.I.S.T.
Watch Trailer