Super Mario World/Donut Plains 3

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Donut Plains 3
Level type Elevated
Entrance Donut Ghost House
Donut Secret 2
Exit Donut Plains 4
Secret Exit No Secret Paths
Time at Start 300
Difficulty Easy

This is a very easy level that takes place on the air and has lots of revolving plataforms. It's even easier if you have Yoshi. The R Button can let you see ahead. This helps a lot.