From the Super Mario Wiki
ON/OFF Switcheroo! is the sixty-third course in the Story Mode of Super Mario Maker 2. It is an autoscrolling level set in the sky theme and in the Super Mario World style. It is posted by Fired-Up Announcer, and has a difficulty rating of 2/4 stars.
The level begins with a Fire Koopa Clown Car that Mario must enter, along with a Hammer Bro and ON/OFF Switches that must be hit by a large fireball. A Super Mushroom follows, along with a low gap and a few more Hammer Bros and ON/OFF Switches. After hitting an ON/OFF Switch above a Winged Hammer Bro to take out some Big Munchers, Mario will reach the Checkpoint Flag and another Super Mushroom. As the autoscroll begins moving slightly faster, Mario must continuously hit ON/OFF Switches using big fireballs to eventually reach a big winged Bowser and a Fire Flower. Mario must then destroy the set of Hard Blocks Bowser is standing on to hit another ON/OFF Switch, then destroy one more column of Hard Blocks to reach the Giant Gate.
"Show me what you're made of! Hop in the Fire Koopa Clown Car and hold to shoot fire at the ON/OFF Switches! Make it to the goal for a reward!"
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