I just hope that there are English versions of the rulebook that don't read like the BGG description of this game:
JOEN's best game is a PEEPER which won the "month of the game" by the ministry of Culture& Entertainment. Peeper is designed for visually handicapped people for the first time, has a good functionality & game quality. It enables to increase the concept of numbers and perception ability with using 4 kinds of number Tiles. The development of spatial cognitive ability and strategic thinking power progress.
Also this game create own board games using number tiles, which is very creative game. The best example is a matrix. It is adopted as an official game for the visually handicapped people this September the handicapped people game, planning to hold a peeper event at the end of this year.