Lil' Devil Coaster

This Zamperla Family Gravity Coaster opened in 1999 as Road Runner Railway, the park's first new kiddie coaster since 1983 and a centerpiece of the newly built Looney Tunes Seaport children's area. Its original theming cast riders as Road Runner outrunning Wile E. Coyote through a compact single-helix layout — gentle enough for young children but built with enough personality, including large fiberglass character figures on the train, to feel like more than a generic kiddie ride.

A safety incident on a similarly manufactured ride elsewhere in New Jersey led the park to briefly pull the coaster for modifications just months after its debut, reinstalling it before the 2000 season with added safety adjustments. It then operated largely unchanged through two decades of Looney Tunes Seaport, until the entire themed area closed after the 2019 season to clear space for the much larger Jersey Devil Coaster.

Rather than scrap the small coaster outright, Six Flags relocated and rethemed it, reopening it in 2021 as Lil' Devil Coaster with Jersey Devil branding that ties directly into its towering steel neighbor. The move preserved one of the park's longest-running family coasters while giving it a fresh identity better suited to the redeveloped area around it.