Sonic the Hedgehog was introduced in 1991 to compete with Nintendo's Mario. Sega is planning to release two Sonic games for handheld consoles later this ... Mario & Sonic at the Olympic Games: E3 2007 Trailer - See if Mario can keep up with Sonic's speed as they compete for gold at the Olympic Games. Amazon.com: Mario & Sonic at the Olympic Games: Video Games. Sonic will become the second confirmed character in the game "not native to Nintendo systems, following the inclusion of Metal Gear's Solid Snake, ... Fans of the famous blue hedgehog