The Curious Factory

The Curious Factory is the first level of the Ruby Passage from the Game Boy Advance game Wario Land 4. It is a labyrinth of a factory with robot-like enemies and many machines called Compressors and Decompressors, which turn Wario into Flat Wario and back again. Most of the flooring and platforms in the level are made up of conveyor belts. The enemy Kaentsubo first appears in this level. The Kaentsubo's heads are on fire, and when they get close to Wario, he will transform into Flaming Wario and will be able to break Bonfire Blocks. Hitting the Frog Switch will open up the underground area of the level, which is more challenging than the upper level. This level's CD is called Driftwood & the Island Dog and once collected, it can be played in the Sound Room.

Time given in different modes
The time given to escape the level after hitting the Frog Switch varies between game modes.


 * [[File:WL4-Normal Mode Sprite.PNG]]: the time given is 3:30.
 * [[File:WL4-Hard Mode Sprite.PNG]]: the time given is 2:50.
 * [[File:WL4-S-Hard Mode Sprite.PNG]] (unlockable): the time given is 2:30.

Trivia

 * This level's music can be found in the WarioWare, Inc.: Mega Microgame$! microgame Paper Plane without the machinery sounds.