arrow keys=move. F=flutter. M=throw egg. collect the eggs. the egg has to hit him when his mouth is open, or else it won't damage him.
Credit to @toastythecat. Updates: - Added Yoshi's voice clips from Super Smash Bros. 4 (3DS and Wii U) and Mario Kart 7. - Added new music when you defeat the final boss (In Yoshi's Island [SNES/GBA], Yoshi's New Island [3DS], Yoshi's Woolly World [Wii U and 3DS] and Yoshi's Crafted World [Nintendo Switch], Baby Bowser is the final boss in normal size in 1st phase and giant in the 2nd phase).