move your mouse. "s" key to change size. "h" key to hide size. Press "0" to change the spikes speed and press "1" to hide it. Press "m" to mute music, and "u" to unmute.
Thx to Isdis_real for the original project. Music by: Velvet Music: Timeless Swing Delight Some of the spikes disappear when making contact with the player. Some don't.