The database also has user email and account information, so if you wanted to airdrop assets to old users, it is possible for those that included a way to recover their accounts.
I don't know this game. But I hope that the email addresses are encrypted and that there is no private data of the users. A privacy-focused cryptocurrency and resale of email addresses it kind of odd.
But I hope that the users already knew about the risks at that time and didn't use addresses and data that can be traced.