The idea of this arcade game is deceptively simple: Guide a marble down a path without hitting any obstacles or straying off the course. The game is viewed from an isometric perspective, which makes it harder to stay focused on the direction the ball is to follow. There are tight corridors to follow and enemies to avoid. There is a 2-player mode in which players must race to the finish; otherwise you're racing against the clock.
Deep Dungeon is very much like Wizardry with the exception that you are not controlling a whole party but a single hero through eight maze-like dungeon levels to get rid of the evil overlord who is responsible for kidnapping the princesses soul.
This little game came in a standalone cassette as a free game with the second issue of the Spanish magazine "Juegue Con Su Amstrad", which roughly translates to "Play With Your Amstrad".
This time around, it's a duel between two cowboys.