No, it is not possible to register multiple GCash accounts. Each user is only allowed to have one GCash account tied to their mobile number. Creating multiple accounts is a violation of GCash's terms and conditions and could result in account suspension or termination. Additionally, multiple accounts could be seen as violation of gambling laws and an attempt to abuse promotions or bonuses offered by online casinos, which could also result in consequences such as being banned from the site. If you need to use a different GCash account, you may need to contact GCash customer support to discuss your options.