Satan's Castle (Primp) (InstanceTopic, 40)
From Compile Worlds
Satan's Tower is a tower built in Primp recently to house Satan and his on going efforts to seduce Arle Nadja and force her into going on a "honeymoon under the starry sky". The tower has many features, including a launch pad for a giant rocket, and a crane to purposely load people into this rocket. Other than that, it seems to be a relatively normal tower and is stuffed with normal furniture. It was stolen and remodeled by Angol Mois during the Amalgamation segment of Compile Worlds, only for it to promptly be recaptured and "restored" by Satan.
It seems to be a Primp replica of the tower seen and used in Puyo Puyo TSU, including the rocket feature. However, this tower is not located in Primp, and was likely demolished after Satan's plans failed, or it blew up in the atmosphere after using it to propel he and Arle to the moon.
Satan also has a Tower in Muffin Town. It is deep within the construction process, but it's construction has been temporarily halted at 6 floors due to Chao wanting to build things other than the tower itself for once.