G-Taste Mahjong belongs to the Japanese niche of adult mahjong drawn from a well-known erotic licence, a confidential PS2 segment never localised and circulated in restricted circles. Its collector interest is twofold: real scarcity tied to a limited run and mature content, and status as an import catalogue curiosity. Desirability stems from this regional and editorial specificity, an item sought by collectors of Japanese adult niches more than for the mahjong itself, which is standard.