The course features four minis. It is one of the three courses (aside from Room R-11 and Room R-12) that need to be completed in order to unlock the option to change most levels in the game so that they feature a mix of all types of mini toys.
All minis start next to each other in the top left portion of the course, on a girder platform. The Goal Door is situated in the top right on a ledge with a Pipe leading to it. The course contains several springs, specifically Yellow Springs and a Blue Spring, some of which stand on top of Pink Blocks that can be removed to bring the springs to a lower level.
The player must first use Pink Blocks to lead the minis to the conveyor near the bottom right and have it set to move to the right. The minis will be moved in that direction to an area that contains a Yellow Spring, which can be used to reach the Pipe that leads to the Goal Door. The spring initially stands on two Pink Blocks, which need to be removed in order to let the spring fall to the ground and allow the minis to use it. After they bounce off the spring, the toys will enter the Pipe above and, shortly afterwards, reach the Goal Door at the other side of it.
Mini Mario Card
The Mini Mario Card is above a few spikes on the left side of the conveyor at the bottom. If the minis use the conveyor to reach the card in this state, they will also be led onto the spikes and lose a life. The player can bring down a Yellow Spring above the conveyor by removing any Pink Blocks underneath it. With the conveyor set to move to the left, the Yellow Spring will be carried to the spikes, allowing the minis to safely bounce away from the spikes once they collect the Mini Mario card. It is also possible to collect the card without the use of the Yellow Spring; the player can tap on the conveyor switch under the conveyor to switch its direction just as soon as a mini reaches and collects the card.