ThinkSmart Crazy Machines for Nintendo DS is a puzzle-solving game that challenges players to construct intricate gadgets and contraptions to accomplish various goals. As part of the broader Crazy Machines franchise, the game falls into the puzzle genre, offering a blend of physics-based interaction and logical thinking. Players use an assortment of parts like gears, levers, and springs to build complex machinery that performs specific tasks. The game encourages creativity and problem-solving skills, making it an entertaining educational experience for players of all ages.