Crushing-Cogs Tower

Crushing Cogs Tower is the fortress level of Acorn Plains and the first overall fortress of New Super Mario Bros. U. It is a castle level with large moving stone cogs and Dry Bones. This course is the first to have the Ice Flower. Additionally, a player must complete this course to enable Miiverse functionality.

Layout
The course contains giant moving stone cogs, some placed to crush the player if one fails to make the jump. The course's enemies are primarily Dry Bones.

Boom Boom is the boss of the fortress. The boss battle is very basic, containing no extra hazards or obstacles.

Star Coins

 * Star Coin 1: Near the start of the course, periodically covered up by a moving stone platform.
 * Star Coin 2: On the left side of the course after many stone cogs.
 * Star Coin 3: Near the end of the course, within the right side. The Star Coin is visible, but the player must look for the part of the wall that's the most green. While the player can wall jump to the Star Coin, one can also use the Cannon Pipe to reach it.

Enemies

 * Dry Bones
 * Boom Boom (boss)