Murderworld

A demented amusement park run by Arcade, who rented its "services" as a death trap and torture chamber. Murderworld had many underground levels, and was stocked with a seemingly limitless supply of robotic dopplegangers of various heroes and villains that were so lifelike that they were indistiguishable from their real templates. The original Murderworld was occupied by X-Force after being abandoned by Arcade, who had somehow constructed a mobile version, which he took on the road. X-Force stayed in Murderworld, which was located under a garbage dump just outside New York City, until one of Arcade's booby traps blew the place up.