#1 Iggy's Castle
#1 Iggy's Castle is the first castle in the game Super Mario World. It introduces fences that can be climbed as well as lava, which kills Mario or Luigi instantly upon being touched. As the name suggests, Iggy Koopa is fought here.
The castle consists of three rooms, one with climbable fences, one with a moving screen, and the boss room. The player has 300 seconds on the Timer to complete the level. This level contains no Dragon Coins in the original, but in the remake it has five.
The first room of the first castle is covered in fences, which can be climbed on with . The fence is teeming with Climbing Koopas that also climb on the fence. Climbing above and then onto these Koopas cause a chain in points, so defeating these Koopas can result in 1-Ups; however, if the player punches the Koopas off, the points do not chain. This gate spans above a lava-covered ground, where Lava Bubbles jump from. There are also Flip Panels that the player can hit to switch sides. There is a Message Block at the start that gives information on how to use the fences, a Switch Block in the middle that turns coins to Empty Blocks as well as a ? Block that contains a Fire Flower, and a Message Block at the end that tells the player one of Yoshi's friends is trapped in the castle.
The second room in the castle features a moving screen with a giant wooden Pillar smashing onto the ground. Being hit by one of the Pillars causes damage. Stretch Blocks help the player cross a gap near the end. Entering the red door at the end of the room leads to the boss.
After Mario enters the big red door at the end of the level leading to the boss fight, he lands on a platform floating in lava with Iggy on it. Iggy attacks by spinning in his shell and shooting balls of fire. To defeat him, Mario needs to jump on or throw fireballs at Iggy to push him off the platform. Once Iggy is defeated, a cutscene is shown afterward in which Mario blows up the castle, rescuing one of Yoshi's friends and unlocking the next world, Donut Plains.
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