
This game is rated ESRB: Everyone for Mild Cartoon Violence.
Developed by Sega Sports R&D and released in 2011 for the Wii, Mario & Sonic at the London 2012 Olympic Games is a sports compilation title featuring a roster of twenty characters drawn from both the Mario and Sonic franchises. Players compete across a variety of events modeled on the official venues of the 2012 Summer Olympics in London. The full roster is organized into four distinct categories — all-around, speed, power, and skill — each reflecting different athletic attributes that influence performance across the game's various disciplines. The combination of two long-running Nintendo and Sega character lineups within an officially licensed Olympic setting gives the game a crossover appeal, blending recognizable franchise figures with recreations of real-world sporting competitions staged in London.

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