Boulder Dash EX is an action-puzzle game released for the Game Boy Advance in 2002. It is a modernized version of the classic 'Boulder Dash' with new graphics and levels, as well as additional features exclusive to the Game Boy Advance version. Players must navigate through caves while avoiding falling boulders, collecting gems, and escaping within a time limit. The game incorporates strategic gameplay and provides a nostalgic experience for fans of the original while introducing new challenges for a younger audience.