Mark Miller, Steve Ross, and Mira Ross are credited with developing the Game Gear port despite not actually being involved at all. The port was developed almost single-handedly by programmer Paul Hutchinson, who was hired as an independent contractor and worked out of his home to build the game.
The true ending of Chakan actually occurs AFTER the ending text and credits. Following the credits, the player is taken to a screen showing an emptying hourglass. After waiting for 90 seconds, the message "not the end" appears and the true final boss battle begins.