Sega has announced four separate games to coincide with the 2020 Olympics in Tokyo, though three of them are versions of the one we already know: Mario and Sonic at the Olympic Games.
In a trailer mixes footage of the four games with a quasi-inspirational montage of old Olympic footage, we see the four games in action. First, there's Olympic Games Tokyo 2020 – The Official Video Game, which looks to be a more traditional collection of games based on Olympic sports. This one has regular people compete in the games instead of iconic, disproportionate mascots. This one is coming to PlayStation 4, Xbox One, Switch, and PC sometime in 2020.
From there, things get a bit funky. There's of course a new version of Mario & Sonic at the Olympic Games coming this winter, but this one is Switch exclusive. If you don't own a Swtich, you can still get your fix this summer by going to an arcade to play Mario & Sonic at the Olympic Games: Arcade Edition, which will probably not have Yun or Yang in it. Finally, we have the iOS version of the game, which will exclude half of series' namesake and simply be titled Sonic at the Olympic Games. That one is also out this summer.