Rise of the Piranha Plants

Rise of the Piranha Plants, or Acorn Plains-5, is the fifth course of Acorn Plains in New Super Mario Bros. U. As the name suggests, this level is filled with different varieties of Piranha Plants. This course is unlocked by completing Yoshi Hill, and a Piranha Plant enemy course is unlocked upon its completion, in turn unlocking Lemmy's Swingback Castle.

Layout
This level is filled with several and different varieties of Piranha Plants and ledges that rise, fall, or are slanted. Overcoming them is required to make progression through the stage.

Star Coins

 * Star Coin 1: Not too far from the start of the level, the first star coin is found above a Big Piranha Plant. The player must either wait until the latter drops down, or simply defeat the piranha using the Fire Flower.
 * Star Coin 2: In a Warp Pipe guarded by a Big Piranha Plant, the player must use a Fire Flower to defeat it and the other Piranha Plants beyond the Warp Pipe. The Piranha Plants in the room containing the Star Coin may also be defeated by hitting the Hidden Block containing the Super Star and running through the Piranha Plants guarding the Star Coin.
 * Star Coin 3: Shortly after the second Star Coin, above a Hammer Bro.

Enemies

 * Koopa Troopas
 * Piranha Plants
 * Big Piranha Plants
 * Hammer Bros.
 * Goombas