You wrote - "Which other Japanese Dreamcast games should I be examining?" Please look "under the microscope" Super Runabout: San Francisco Edition (JAP), for this game there is a password - Elvis!!! (All Cars/Levels) and it only works for the JAP version of the game. It seems to me that there are other hard-coded passwords.
Found cheat codes for 4 Wheel Thunder (DC) (dreamcast-talk)
Bo, have you watched this game "under the microscope"? Are there new cheat codes there?
I'll write here, because my post was deleted.
In the games Surf Rocket Racers (USA) and Power Jet Racing 2001 (JAP) there is a secret character "DUCK", it can be unlocked with the CB code 024449AC 00000001(USA). But there is also a secret character "DOLPHINE", how to unlock it, I don't know.
You wrote - "Which other Japanese Dreamcast games should I be examining?" Please look "under the microscope" Super Runabout: San Francisco Edition (JAP), for this game there is a password - Elvis!!! (All Cars/Levels) and it only works for the JAP version of the game. It seems to me that there are other hard-coded passwords.
Found cheat codes for 4 Wheel Thunder (DC) (dreamcast-talk)
Bo, have you watched this game "under the microscope"? Are there new cheat codes there?
I'll write here, because my post was deleted.
In the games Surf Rocket Racers (USA) and Power Jet Racing 2001 (JAP) there is a secret character "DUCK", it can be unlocked with the CB code 024449AC 00000001(USA). But there is also a secret character "DOLPHINE", how to unlock it, I don't know.
Super Runabout: coming soon!
Surf Rocket Racers: Also coming soon! Dolphine doesn't seem to have actually been implemented though.