World 6-6 (Super Mario Bros. 3)

World 6-6 is the sixth main level and the seventh level overall in Ice Land from Super Mario Bros. 3. This level is a underground level, but takes place mostly underwater.

Layout
The level starts with a Warp Pipe that sends Mario to the underground area. In the underground area, there are stairs which can be used to reach a small area with a jumping Cheep Cheep, a Spike, and a Fire Flower. Next, there is a Wooden Block with a Super Star, another jumping Cheep Cheep, and Piranha Plants. Next, there is a big underwater area with Cheep Cheeps, 1-Up Mushroom, and another Fire Flower. In the end of the underwater area, there are a few Pirahna Plants, which can be easily defeated with Fire Mario. After the underwater area, there are more Spikes, and a Warp Pipe which warps Mario to the goal.

Enemies

 * Cheep Cheeps
 * Spikes
 * Piranha Plants
 * Fire Piranha Plants

Level statistics

 * Power-ups: 3 (two Super Mushroom or Super Leaf, and one Super Star)
 * 1-Up Mushrooms: 1
 * Secret areas: 0