Mario wa Sonic London Olympic (マリオとソニックロンドンオリンピック) is a 2012 Nintendo 3DS game developed by Sega Sports R&D. It is a sports game based on the 2012 Summer Olympics in London. Players can choose from a variety of characters from the Mario and Sonic franchises, including Mario, Luigi, Sonic, Tails, and many others. Players can compete in various Olympic events, such as athletics, swimming, and gymnastics. The game also features a variety of mini-games, such as Mario Kart-style races and shooting galleries. Players can also collect coins and items to unlock bonus content. The game also supports local and online multiplayer, allowing players to compete against each other. Mario wa Sonic London Olympic is an enjoyable game that captures the spirit of the Olympics and provides an exciting gaming experience.