Since 2007, Sega has collaborated with former rival Nintendo to produce "Mario & Sonic", an Olympic Games-themed crossover with the "Mario" franchise. The first "Mario & Sonic" game was released in 2007 for the Wii and in 2008 for the DS to tie in with the 2008 Summer Olympics. "Mario & Sonic at the Olympic Winter Games", based on the 2010 Winter Olympics, was released in 2010 for the Wii and DS, and "Mario & Sonic at the London 2012 Olympic Games", based on the 2012 Summer Olympics, was released for the Wii in 2011 and the 3DS in 2012. The fourth game, 2013's "Mario & Sonic at the Sochi 2014 Olympic Winter Games", was exclusive to the Wii U, but the following game, "Mario & Sonic at the Rio 2016 Olympic Games" (2016), was released on both the Wii U and 3DS. After a brief hiatus, the series made a return in 2019 with "Mario & Sonic at the Olympic Games Tokyo 2020" for the Switch, based on the 2020 Summer Olympics.