Super Mario World is a 2D adventure game where the main character Mario must rescue Princess Peach by fighting through increasingly difficult levels. One of Mario's companions is Yoshi, a green dinosaur who can eat enemies and shoot them as fireballs. The game features Bowser's cousins in castles as boss levels, which require carefully timing jumps onto their heads to defeat them. Bowser himself waits in the final castle to kidnap Princess Peach again. The game includes power-ups like mushrooms that grant extra health and flowers that let Mario shoot flames.