This is the original Yoshi's Island, a SNES classic. You explore six worlds as Yoshi, tasked with protecting Baby Mario from a huge cast of enemies. Its beautiful, crayon-drawn art style and inventive levels make it absolutely worth playing.
The game is a methodical platformer more than a speed run. Your main goal is keeping Baby Mario safe, which adds a unique layer of tension. The real surprise is the variety of transformations, like turning into a helicopter or a submarine. Grab an egg and give it a shot.