Cat Mario's Course
From the Super Mario Wiki
The level begins with a Koopa Troopa, along with many Piranha Plants below. Afterwards, a Brick Block wall appears, with a warp pipe spawning Bob-ombs, and a ? Block with a Giant Bob-omb inside. Several coin-launching Bill Blasters appear, along with some Goomba Towers afterwards. Mario can use a Koopa Troopa on top of the Bullet Bill Blasters to defeat the Goombas, and after passing another Koopa Troopa, he must jump up some warp pipes to the Goal Pole.
This course was made by Cat Mario from The Cat Mario Show, a video series available on Nintendo eShop and YouTube. It's a nice classic course, full of the kind of unique features that you would only ever find in Super Mario Maker.
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