1-4 Remix (Castle)
From the Super Mario Wiki
1-4 Remix (Castle) is the sixteenth sample course in Super Mario Maker, based off of World 1-4 from Super Mario Bros.. As such, the level is set in the castle theme and in the Super Mario Bros. style.
The level is the same as in the original, except that the level contains more Fire Bars. Additionally, near the end, there is a line-controlled Fire Bar orbiting a ? Block containing a Mystery Mushroom transforming Mario into Bowser. This segment leads directly to the Bowser segment, and the ax clearing the level.
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