Magma Castle

The Magma Castle is the front-right fort on Bowser's Castle in Yoshi's Story. This is often considered to be the hardest of the castle levels, and it is where lava is transported through Bowser's Castle, causing the regular dangerous falls and geysers. It is also the storage facility, as many rare creatures are located here such as Spikes, Puffers, Barbecue Guys, Attacky Sacks and even a red dragon. A Slug also thrives in the depths of the tower.

The level starts near a Dragon which must be ridden on in order to collect some fruits and advance to the next area. Here, lava comes out of pipes and Yoshi must traverse some moving platforms, while avoiding the lave, in order to get to an area with more lava and narrow corridors. After the player collects thirty fruits, the battle against Baby Bowser starts. Baby Bowser says "What have we here? Mario's little pet! I have pets too! Let's all play together. Play nice, you wimpy pet, I hate guests who throw bob-ombs at my ceiling." Yoshi must hit Baby Bowser three times with spikes by throwing bob-ombs he gets from the Super Happy Tree and knocking them of the roof, in order to make him jump down to ground level. He must repeat the process on the ground three more times to finish the level and beat Baby Bowser. If the Yoshi runs out of eggs before he beats Baby Bowser, then he can eat the fruit on the tree. Baby Bowser ends with the line: "Yeeeeow!!! This Hurts! I hate you puny, little Yoshis. I'll give you back your Super Stupid Tree! Besides, Its fruit taste rotten to me!"

Storybook Segment
''The Yoshis found the castle and figured the Super Happy Tree was there. Instead they found hot lava and a hot-tempered Baby Bowser. But happiness wins in the end, and the Yoshis battled Baby Bowser.''