Used cheat cartridge for the Nintendo Game Boy game console. 

This cartridge allows you to enter codes in order to modify all kinds of game settings: number of lives, invulnerability, skipping levels, etc. 

Documentation and box text are English.
Tested, works. In very good condition. Box and instruction booklet in good condition. Booklet has some writings inside. Box has some damage. Please refer to pictures for details of condition and contents. 

Genre: cheat device 

EAN 5744707000059