Patreon has a deal with Paypal it seems. It is PayPal's fault that we are no longer allowed to do incest, non-con, or bestiality on the platform, however they are allowing the rest... for now.
I would absolutely suggest against doing PayPal on your own, either through a game donation link, or a personal website. PayPal has a responsibility, legally, to make sure that no one is using their platform for illegal activity, drug trafficking, sex work, etc, and as a result they will make inquiries when they see you're getting large numbers of donations from all over. When they find out its for adult content you will lose your account and no longer be able to use PayPal.
There are options, tipping services, like Buy me a Coffee, for instance, don't appear to ask any questions or raise any eyebrows, yet, however, the new american laws surrounding sex workers might change that as we move forward. In a misguided attempt to crack down on sex trafficking they made it so that they can hold the platforms liable if they're enabling this activity. Of course this only makes it easier for traffickers to take advantage of girls, by removing their safer alternatives on the internet, and pushing them further into seclusion. But that's another discussion entirely.
I'm currently holding out hope for "
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" which aims to be a more accepting platform than Patreon. They already have a payment provider that has promised they'd be allowed to use whatever adult content (within the law) they want, and with a fee schedule that is close to Patreon's. According to their
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, they hope to be launched by fall of this year.