Yes, this is a Nintendo game.
The Switch 2's mouse controls will have a demo game shortly after launch.
During the Nintendo Direct, a new game called Drag X Drive was shown. Due in the summer, the game uses the JoyCon mouse movement to control a wheelchair in a 3v3 basketball-like game, using the top buttons to shoot and perform dunks.
The arena is fully enclosed with the walls serving as ramps to get in the air.