charlequin
Banned
The interesting thing about thsi leak is how many Japanese games there are on there compared to western stuff.
Basically any Western dev/publisher who's going to put stuff on Steam is either already doing it (in which case they probably know how to avoid this sort of thing) or is so new that we wouldn't be looking for them anyway.
Conversely, because Japanese support of Steam is still so nascent, there are tons of publishers finally considering a late version of things that should've been on Steam ages ago (Steins;Gate), bringing a large chunk of their catalog to PC after never releasing for it before (Nippon Ichi), etc.