A computer game was also produced, based on the board game. It was a graphical Action and Adventure game released in 1991, by Digital Magic, for the Amiga platform. It is played with a combination of joystick and keyboard, whereby the player controls the four prisoners, one at a time, switching between them freely using the F1-F4 keys. Guards patrol most zones of the prison day and night. There are curfews and there are calls for recounting the prisoners in the courtyard. Violating them would mean getting arrested into solitary cells; resisting would mean getting killed by the guards, who are quite skilled with guns.