The donor believes this game was purchased at a military PX (meaning Post Exchange--a store on an American military base anywhere) in Tokyo, Japan, around 1990. The game is Japanese and marked exclusively with Japanese characters. However, the game play is clear by the graphics on the box. Players hold plastic pigs in their hands. Squeezing the pigs causes them to "exhale" air puffs. By this method players attempt to blow a "birdie" made of lightest styrofoam aloft and over a plastic net to the opposing side. The donor called it "Pig Pong" but the actual name is not yet translated.