Download a modded version of apk editor > download a normal gacha club (32bit/64bit supported) > download zarchiver > get the gacha mod swf file > extract it from the zip/apk > open apk editor > click apk files > find the normal gacha club you downloaded > click common edit (for icon, name and package name change > save ) or click simple edit ( assets folder > click change file > change it with swf file you extracted > save). There you have it<3
I don't know how much to explain it. The process is complicated on hand ;-;