Toad's Factory is the fourth and final course of the Mushroom Cup from Mario Kart Wii. As the name implies, the course takes place in a factory owned by Toad. This factory seems to be producing Item Boxes, as seen in several parts of the course.
This track is located in the interior and exterior of a large item box factory. The course's features include conveyor belts in the track, which can either help or hinder the player depending on what direction he or she may be going, as well as some hydraulic crushing machines over conveyor belts, which may crush the player. Multiple boxes slide along on the conveyor belts, which can slow vehicles down if they hit them, but they may let out a Mushroom or a banana when broken. Towards the end of the track, a large pool of mud must be crossed by the players. To get over quickly, Dash Panels are used. However, bulldozers on either side of the track will alternately move back and forth, covering up and revealing Dash Panels. The third and final Dash Panel is on a ramp.
The course begins just outside the factory with a picture of the owner, Toad, ahead. There is a tight turn with item boxes across. After the turn, there are several conveyor belts under hydraulic presses, which create and destroy Item Boxes for the player to grab, but may crush the player. There are three conveyor belts; one moving forward and the other two going back.
After this area, the player goes outside, where they can jump off a boost panel ramp onto platforms that move left and right. Here, there are more conveyor belts, but they move left and right rather than forward and backward. Wooden boxes are on the conveyor belts and slow down the player if hit, but may contain items. If the player is not careful, they may fall in the water below.
After the platforms is another room that leads to another section of the factory. There, there is a place where the player can fall off if they happen to turn too tightly. After this section is a room with two conveyor belts moving opposite directions (forward and backward) and a small path with item boxes, but no conveyor belts.The direction of these conveyor belts changes after each lap.
After the double conveyor belt room, there is a room full of red smoke blasters. The player then turns right and onto a ramp with boost panels that lead outside the factory and outside into the dirt. The player may perform a stunt to reach the floating item boxes to receive an item.
On the ground, the player will notice a lot of bumps. The player may perform a stunt on these bumps to gain momentum. There is a turn right and into the area with the tractors, mud, and boost panels. If the player happens to turn too tightly on this turn, he or she can fall into the water.
At the tractor area, the road is covered in mud. In order to go through it without losing any speed, the player must drive over the boost panels, left or right. If the left boost panel is exposed, the boost panel directly right of this panel will get covered by the tractors and vice versa. Same goes for the second set of boost panels, except that the pattern is inverted. After the tractor, there is a bump that has a boost panel in it will enable the player to execute a stunt before the player crosses the finish line. After that, the lap has been completed, and the cycle will continue until the end of the race.
There is a shortcut that allows the player to cut the final curve, just after jumping out of the factory, the player must use a Mushroom at the soil ramps and perform a trick so the player can pass over the waterhole falling just before the big bulldozers. This can also be done without a Mushroom.
In the muddy area, racers can save time by going on the dirt side of the final ramp instead of hitting the boost ramp.
A tournament took place on this track, where players competed in a time trial race. However, this time trial involved racing through Toad's Factory backwards. As a result, ramps had been added to make it possible to complete the tournament. It was the first tournament of January 2009, and it was repeated as the first tournament of January 2011, the second tournament of April 2012, and the July 2013 first tournament.
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