Yellow Cap Switch

The Yellow Cap Switch is an unused cap switch object referenced to appear in the Princess' Secret Slide. When loaded in, it will appear pressed no matter what, likely due to all yellow ! blocks being pressed in the final game. It is associated with transparent yellow ! blocks that would have spawned koopa shells. It is unclear if the koopa shells were placeholders or not. It is possible the Yellow Cap Switch is a reference to Super Mario World, as the first Switch Palace had a yellow switch. It is also associated with the unused Springboard object.