Originally designed and programmed for the Sharp X1 and Sony SMC-777 by Fumihiko Itagaki, and published as "Bousou Tokkyuu SOS" by Hudson Soft in 1983.
Ported to Commodore 64, Hitachi S1 and Sinclair ZX Spectrum by Hudson Soft, and respectively published in 1984 by Commodore Business Machines, Hudson Soft and Sinclair Research Ltd.
Ported to MSX by SoftBank, and published by Hudson Soft, Sony, Kuma Computers, HoneyBee Soft and Toshiba in various regions in 1984.
Unofficial conversion for Commodore Plus/4 by Csabo, with graphics by Chronos, and released by Legion of Doom in 2021.
Unofficial conversion for Mattel Intellivision by Carlos Madruga, with music and sound effects by Anders Carlsson, and released through Intellivision Collector in 2023.
INTRODUCTION & GAME STATUS
Hudson Soft's games haven't been all that well represented here at FRGCB, so I thought I might tackle at least one of them now. If you're first and foremost a fan of either Commodore 64 or Sinclair's ZX Spectrum line of computers, chances are that you might have missed Hudson Soft either by choice or by accident. Their games for those two computers didn't really scream Hudson Soft at you, although they were certainly responsible for some of the earliest Sinclair classics. Stop the Express was not necessarily one of the most well-known ones of the lot, possibly because it was already made during the time when Hudson was prioritizing their efforts on the Japanese 8-bit computers like Sharp X1 and MSX, but it became some sort of a cult classic. Only in the last few years, Stop the Express has gone through a revival period, with new versions for Commodore Plus/4 and Intellivision already out, and rumour has it, there are more conversions in the pipeline.