Pokemon Trading Card Game: Mega Evolution Booster Bundle GameStop Japanese Pokmon Cards UK New Japanese Pokmon Set GameStop's In Store Release Schedule is STACKED! From new collection boxes and tins, to the upcoming Mega Evolution set the next few months are loaded with heat GameStop will GameStop is turning up the heat this summer with back to back Pokmon drops. From now through August, expect major drops almost every week, featuring new Prismatic drops, the Mega Evolution collection, and the Pokemon Trading Card Game: Mega Evolution Sleeved Booster Pack GameStop