Here is an overview of the game, via Nintendo.com:
Donkey Kong has stolen the Mini-Marios! Solve platforming puzzles to get them back!
Run, jump, and backflip your way to rescuing the stolen Mini-Mario toys in this puzzling twist on Mario action. Obstacles like spikes, moving platforms, and falling bricks stand in your way—put your brain to work and figure out the best way to reach the Mini-Marios. The rivalry that originally heated up on the Game Boy Advance system reignites on the Nintendo Switch system with newly-added co-op play and updated visuals.
Watch the announcement trailer below. View the first screenshots at the gallery.