Stop the Express

Stop the Express
MSX cover art
DeveloperHudson Soft
PublishersMSX, X1
Honeybee Soft
ZX Spectrum
Sinclair Research Ltd
DesignerFumihiko Itagaki
PlatformsSharp X1, ZX Spectrum, Commodore 64, MSX
Release1983
GenreAction
ModeSingle-player

Stop the Express, also known as Runaway Express SOS (暴走特急SOS, Bōsō Tokkyū SOS) in Japan, is a video game developed by Hudson Soft and published in 1983. It was written for the Sharp X1 and later ported to the ZX Spectrum, Commodore 64, and MSX.

It was remade for Nintendo Family Computer as Challenger (チャレンジャー) in 1985.