From a Korea Times article in May 1984:
Heh. Strip poker. That takes me back. I liked the fact that there "is no law preventing software programs from being duplicated." I also think 4000-8000 won would have been pretty pricey back then. The place mentioned where the disks were being sold, the Seun Sangga, was also well known for in the 1970s and 1980s for selling porn. A friend of mine remembered going there in high school and having vendors calling out in a secretive tone, "Hey, haksaeng!"