Whac-A-Mole for the Nintendo Game Boy Advance is an arcade-style action game based on the classic carnival attraction. Players use a virtual mallet to 'whack' moles popping out of holes on the screen. The game tests reflexes and timing, as players must hit the moles as quickly as possible while avoiding any penalties for striking hazards. The gameplay is simple but addictive, with escalating difficulty levels adding to the challenge. It's an engaging pick-up-and-play experience that translates the frenzied fun of the original physical game to the handheld console.