ICP Number is not necessery for offiline games or app without self host server. from an offical answer by MIIT china". https://www.isc.org.cn/article/17570944022605824.html And some android platform in china is not force offiline games or app without self host server developer to fill the ICP Number. https://dev.mi.com/distribute/doc/details?pId=1739 【在中华人民共和国境内从事互联网信息服务的APP主办者（开发者）若APP本身内容是单机，仅使用了其他供应商的广告服务、推广服务，且域名等不属于APP主办者，则主办者不用为不联网的单机APP进行备案】。