Radical Dreamers: The Unstealable Jewel is a Japanese video game developed by Square in 1996 for the Satellaview add-on for the Super Famicom. It is a text-based visual novel in which the player takes the role of Serge, a young adventurer accompanied by Kid, a teen-aged thief, and Gil, a mysterious masked magician.
The game belongs to the Chrono series and is a gaiden, or side story, to the 1995 game Chrono Trigger. It was released to complement its predecessor's plot, and later served as inspiration for
chrono cross. It features text-based gameplay with minimal graphics and sound effects, and was scored by composer Yasunori Mitsuda. Unlike many Satellaview titles, Radical Dreamers was not designed to lock after a certain number of playthroughs, so players owning an 8M Memory Pack onto which the game was downloaded can still play today.