What's funny is that they are advertising a domain that is on sale at the moment. I really wonder what their end game is.

According to the archive: they had a planned crowdsale back then -
https://archive.ph/oKLgg which I believe they carried out (
https://startuptracker.io/startups/pokereum?t=ab), and now they are coming for another "Pre-Sale"?
Looks like a scheme to gather some ETH or BNB from unsuspecting folks.