In Island , players control the differently colored Yoshis most of the time. When a star is collected, it makes Mario invincible. As a Yoshi, players can swallow enemies to make eggs; these eggs are used for attacking other enemies and activating switches. Yoshis can also pound the ground for attacks and flip certain switches. Additionally, Yoshis can transform into vehicles, such as a helicopter, submarine, or train. If Mario is dismounted from a Yoshi, a countdown starts, and Yoshi must catch the baby before Kamek's servants kidnap it. When Mario is invincible, he doesn't ride on Yoshi and is immune to attack.