Mario & Sonic at the Olympic Games for Nintendo DS is a sports-themed party game that blends iconic characters from the Mario and Sonic universes. As a crossover title, players compete in a variety of Olympic events using touch-screen controls and the DS stylus. The game offers multiple disciplines including track, field, gymnastics, and aquatics. It features single and multiplayer modes, where players can choose from a roster of beloved characters, each with unique abilities, to win medals and set records in a quest for Olympic glory.