The game received mixed to average reviews upon release. Both the Wii and 3DS versions hold an average score of 66 percent at
Metacritic, with the Wii version based on an aggregate of 38 reviews and the 3DS version of 28 reviews. Chris Scullion from the
Official Nintendo Magazine asserted that the Wii version was a "step sideways" for the series, regarding the gameplay and lack of challenge as an overall underwhelming experience for an individual player. John Minkley of
Eurogamer likewise thought the game failed to replicate the "charming" and inclusive formula of its predecessors, saying that many of its game modes remained too similar and "undercooked", despite new additions. While Mike Anderiesz from
The Guardian opined that the game may not have done justice to either of the franchise's universes in light of their distinctive environment and visuals, he did commend
Mario & Sonic as a "colourful diversion" for its young target audience.
GamesRadar+s Neilie Johnson lamented on the game's overall lack of new content and predictability, although he singled out the "London Party" mode as "fun" and the only part of the game which took full advantage of the UK setting. Likewise, both Mark Langshaw of
Digital Spy and Lucas Thomas of
IGN complained that the game rehashed many elements of its predecessors. Langshaw ultimately heralded the game's colourful cartoon-like aesthetic and wide array of characters as bolstering appeal for the younger generation, and felt that part of its appeal was that none of Olympic events featured offer accurate representations of their real life counterparts. Thomas praised the game's presentation of London and said that its prominent depiction of world-famous landmarks alongside
Mario and
Sonic the Hedgehog characters elevated the overall experience to which its predecessors did not emulate. He also felt that the game's non-support of the
Wii MotionPlus, available shortly after its predecessor, was a missed opportunity for the series. On the Nintendo 3DS, reviewers found the game to be largely similar to its Wii counterpart. Tom East from the
Official Nintendo Magazine found that the 3DS version was a marginal improvement over the Wii version, praising its "outstanding" soundtrack and the novelty of seeing characters from both franchises interact with each other as factors which add a degree of longevity to the game. Shane Jury of
Cubed3 praised the crisp visuals of the 3DS version, remarking that the characters are animated "incredibly well" and felt that the game's overall vibrant and colourful atmosphere and 3D capabilities helped make it stand out from the Wii version, albeit lightly. While
IGN's Richard George thought that some of the minigames "fared better" than its Wii counterpart in terms of replay value, he expressed disappointment over the "embarrassing design" of certain minigames and criticised its "shallow attempts" of replicating some Olympic events. ==Notes==