Pretty impressive making a Mario Maker style game. Two things:
- Player jump height is excessive and floaty. Adding variable jump height and strengthening the pull of gravity would help tremendously.
- The dropping platforms would sometimes drop as soon as I touched them, leaving little room for reaction time. A blinking or short, subtle tremble animation before dropping would give the player more time to react. Also being able to sprint over these tiles would be fun, but that can be a feature for later.
Great job! (◕‿◕✿)