World Coin-1 (New Super Mario Bros. U)
From the Super Mario Wiki
World Coin-1, or Coin Courses-1, is the first level in the multiplayer exclusive Coin Courses in New Super Mario Bros. U. This level is located in Acorn Plains and is based on the level Rise of the Piranha Plants. The course is given a difficulty rating of one star.
The level begins on a normal pasture with four mobile platforms, then follows a area with two pipes with Piranha Plants and a floating zone and a hidden area below of the three Brick Blocks of the place. Following this is a hill with a Hammer Bro and an area with several pipes that spew coins. Goombas and the Checkpoint Flag can be found afterwards. Following that is another area with more pipes and platforms to reach a P-Switch and a Koopa Troopa and the end of the level.