Night Falls on Really Rolling Hills
From the Super Mario Wiki
Night Falls on Really Rolling Hills, otherwise known as World Mushroom-1, is the first level in World Mushroom in Super Mario 3D World. It is unlocked by completing Cosmic Cannon Cluster, and its own completion unlocks Spiky Mount Beanpole and Deep-Black Jungle Drift. This is the first level in the game to not include any stamps, besides minor levels such as Toad Houses, Mystery Houses, or Coin Express.
The stage is a redesign of Really Rolling Hills, and is naturally almost identical in design. The level is set in the dead of night and is shorter, given that when the characters begin the level, they only have 30 seconds to get through it while picking up + Clocks and dodging Spiny Skipsqueaks, which replace regular Skipsqueaks, and Spinies, which are randomly scattered throughout the level.
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