It is still possible to play now. The invitation plan with a relatively high cost-effectiveness is Account 1->Account 2->Account 3->Account n. The third account is your main account, which can get 25% more (20% for the first level and 5% for the second level). In this way, each account can get a free upgrade (click the first item in the box to get a free upgrade).

Give priority to upgrading cats and fish. The most cost-effective one is 1.5x1.5. Upgrade the ship to collect once every 6 hours (set an alarm and collect all accounts at this time), and then sell the coins to get back the original cost. New accounts (Account 1) can use my link: t click me/waveonsuibot/walletapp?startapp=3092617

Updated the withdrawal strategy for multiple accounts: