The First Half of World 1.
The 2nd Half of World 1.
Levels 
Edit
- Crashed Airship (Hub)
- Baby Steps
- Fungi Beetles' Domain
- 'Shroom Tops
- Yellow Block Road
- D. O. Nut Bridge
- Mario's Villa (Castle Level)
- Mushroom Way
Enemies Edit
Baby Steps Edit
Fungi Beetles' Domain Edit
'Shroom Tops Edit
Yellow Block Road Edit
D. O. Nut Bridge Edit
Mario's Villa Edit
- Mini-Mario
- Dry Fossil
- Baby Bros.
- Popmo (World 1 Boss)
Mushroom Way Edit
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