Plus Event

From the Super Mario Wiki

Plus Events are a type of Event similar to Dream Events that exclusively appears in the Nintendo 3DS version of Mario & Sonic at the Rio 2016 Olympic Games.They take place in the same locations as the original event and use similar controls, scoring systems and objectives, but feature items or obstacles from the Mario and Sonic the Hedgehog series alongside the regular event's original gameplay. There is a Plus Event for all of the different Olympic events included in the game: