The game features 42 playable characters from Mario and Sonic the Hedgehog franchises, as well as the option to use a previously made Mii character in-game. In the Nintendo 3DS version of the game, Mario, Sonic, and Mii are the only characters that can be used in all events; other returning characters are exclusive to two events while new characters are only playable in one. In the Wii U version of the game, all returning characters from previous games are usable in all events, while new playable characters (known as "guests" in-game) are only playable in one.
Unlike prior installments, motion controls have been removed from a majority of events across both versions. The Wii U version's multiplayer mode requires at least all but one player to each use a Wii Remote, usually turned on its side, while allowing one other player to use a Wii U GamePad.
The game was first revealed on the Japanese Nintendo Direct website on May 30, 2015.[7] Like the previous games, the game was officially licensed by the International Olympic Committee.[2] Both versions of the game released worldwide in 2016.[8] An arcade edition of the game was also announced by Sega, which was released in Japan in 2016.[9][10] It was released in North America and Europe on June 24, 2016, alongside the Wii U version.[11]
Both versions of the game were delisted from the Nintendo eShop on December 26, 2017.[12]
On the review aggregator Metacritic, both the 3DS and Wii U versions of the game received "mixed or average" scores of 60 (based on 30 critics) and 65 (based on 26 critics) respectively.[13][14] The game was criticised for being too similar to past installments of the Mario & Sonic series. Nintendo World Report gave the Wii U version a 7/10, stating "While the limited amount of events are the major downer here, I had fun playing them alone or with friends".[19]
Stuart Andrews of TrustedReviews gave the Wii U version a 7/10, stating, "It’s every bit as shallow and silly as previous titles, taking on a broad range of disciplines without ever really mastering any. Yet, if you’re looking for a fun game to play with the family then it’s one of the most enjoyable I’ve played this year."[20]
Notes
^Japanese: マリオ&ソニック AT リオオリンピック, Hepburn: Mario ando Sonikku atto Rio Orinpikku, lit. 'Mario & Sonic at the Rio Olympics'