I Spy Challenger for the Nintendo Game Boy Advance is a puzzle-adventure game based on the popular I Spy book series. It falls within the educational genre, specifically designed to challenge players' observational skills and problem-solving abilities. Through a variety of mini-games and riddles that feature hidden objects, players must hone their attention to detail. The game's interactive puzzles involve spotting specific items within complex, crowded scenes, often coupled with rhyming clues. It's an engaging title for younger players looking to improve their cognitive skills in a fun, game-based setting.