I should add that there is a version of Gardman that is omits the cutscenes and is therefore just 128k/128k in size on the
XB805 72-in-1 multicart. Comparing the various offsets in the fixed bank, it seems to be recompiled from source code rather than a simple binary hack of Nanjing's release. I have attached it.
I would assign the various hacks to the different publishers:
- Gardman for Shenzhen Nanjing Technology, part of a whole series of old Dragon Co. games receiving similar story-panel treatment;
- Wonder Rabbit and Diveman for Trump Grand Manufacturing, a.k.a. Power Joy;
- Monster Brother and Five Kids for Fuzhou Waixing Computer Science & Technology.
I would also highlight the fact that Wonder Rabbit+Diveman, and Monster Brother+Five Kids,, having a complementing set of two levels each, should be considered as pairs, not unlike how another Dragon Co./Nice Code Software game, Tom&Jerry 3, was split up into "Primitive Man" and "Primitive Woman".
There is a later title screen hack of Monster Brother that adds a Chinese copyright office registration number to the bottom of the screen, stealing tiles that had been previously used to spell "Monster", so it just says "Brother 2007SR02108".
Finally, I wonder whether the "5" of "Pikachu5" is not merely a result of this particular PnP console having another "Pikachu" based on Tetris, and so not truly part of the game's name.