Sega and Nintendo have finally opened the official Japanese site of the Arcade Edition of Mario & Sonic at the Rio 2016 Olympic Games, and includes footage from a variety of events in the game.
So far as playable characters go, we just have the usual characters including Mario, Yoshi, Sonic, Knuckles, Bowser, Peach, Eggman, Amy, Luigi, Wario, Tails, Shadow, Bowser Jr., DK, Metal Sonic, and Vector. The site teases at least four more to be unveiled, but naturally they’re surely to be any of the other known characters in the 3DS versions’ 40 total.
Among the events showcased is the classic 100m, which you can see below, with more in the events page.
And just a few of the small screens provided below. There are quite a bit more shown when clicking on a character in the characters page.
Via the Japanese website of the game.