Balloon operation game

"How to use:
Tap the word [Burner] to raise it.
Tap the word [Lip open] to lower it.
Tap the word [Lip close] to stop the balloon.
Tap the [Mark] character to drop the mark.
Tap the word [Summary] to see the description.
Click the word [NEXT] to display the game results.
Class will be A when the mark is dropped from an altitude of 170m or higher.
* To restart, tap the burner after the balloon has landed.