Tony Hawk's Underground for the Gameboy Advance is a 2D skateboarding video game that blends sports with adventure elements. Published by Activision in 2003, the game allows players to perform tricks and combos as they skate through various levels. The GBA version offers a portable rendition of the popular 3D console game, showcasing simplified graphics while retaining core gameplay mechanics. Players work their way up from an unknown skater to a pro, tackling goals, story-driven missions, and experiencing a deep customization system for both skater and board. The genre is primarily sports, with an emphasis on action and adventure.