If you didn't know... the title is just Jump but upside-down. ԀW∩ſ Put your mouse above the character to make it face up, put it below the character to make it upside-down. Control the character with your mouse. If you put your mouse to the left, it will follow. If you put your mouse to the right, it will follow. Try to get as high as you can!
The music is called "Relaxing" from Bensound.com @Shadow_Leaf did all of the coding, while I remixed this and made other things different. WHEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE