Collector interest
Imagineer's beefed-up Sokoban puzzler released only in Japan on Super Famicom, never localized, making it a niche import for genre fans. The universal concept plays with no language barrier, a plus for importers, and the Japanese version is the only one that exists, complete with its SFC cardboard box and spine card. Desirability rests on Japan-exclusive status and content depth rather than cult aura, with value climbing on complete copies with an intact spine.