This stuff doesn't fly over here, and considering the Japanese copyright laws, I'd think that Korea would be somewhat similar, but from the looks of it, there's no laws concerning it whatsoever. This kind of stuff will lead to the death of the system here because it's just too kitchy. The companies putting this stuff out are either lazy or cheap, and maybe a combo of both. It's nothing new, look at all pirate versions of the Famicom, but to be honest, I'm kind of a purist when it comes to video game brands, this just shows a lack of creativity which is infuriating to see in any producer or developer.
Whew, that being said, I think the GP32 is great for probably one reason: it's openess. What other system can an independant developer program for cheaply and somewhat easily? I like it, but like most geeky things, it usually dies out here quickly.