After playing around with the Inventory in Youkai Watch i found out some interesting thing. There are two checks in place to go against playing around with the items itself, in the form of two values. The first Value is in the ram range of 0x08690840 to 0x08690CB8. The first adress alway points to the quantity of the item. The maximum number of one items 255x, the only exception are keyitems putting them higher then 1 may result in crashes. The offset between each items 0x10. The range of the second value is still unknown to me as of now i just know that the range around 0x08691866 is part of it. And there also isnt an recognizable pattern to the range like with the first value. Pattern in first range: XX 00 00 00 1C 46 5B 00 YY 00 ZZ 00 ?? ?? ?? ?? XX = Quantity YY = seems tobe somesort of running index that is hardcoded? ZZ = ?? ?? = 32bit value - item id So i hope that maybe you guys can help with it.