VIPER-V8 R includes the VIPER-V8 originals "Friday the 18th" and "Demon's Night", but with the reassignment of "Alien War" to VIPER-V6 R, a replacement was needed. As Sogna was in dire financial straits at this point they hastily created and included "Komachikawa Detective Agency", an incomplete game that was perhaps initially on the slate for inclusion in the future VIPER-M6 game, as a new cover series. This was done to give VIPER-V8 R some measure of star power that the other V series games had but VIPER-V8 lacked. Komachikawa was not as well received as Sogna had hoped.
VIPER-V8 R would ultimately prove to be Sogna's final release. It was not up to the challenge of saving the company from bankruptcy.