Copypasting very useful review which summarized it perfectly:

On 1 April 2020, the "developer" of this game illegally revoked thousands of keys he sold for it on Fanatical, harming all Steam users who paid for those keys or received them as gifts.

Valve needs to make it harder for developers to simply revoke keys at will like this. In most jurisdictions, according to consumer defense laws, Valve would also be considered legally responsible in these cases, since it is their Steam platform that allows the generation of those keys and their revocation.

UNTIL PEOPLE START MASS REPORTING THESE CASES FOR FRAUD OR LEGAL VIOLATION, VALVE WON'T DO ANYTHING. SO PLEASE GO TO THE GAME'S STORE PAGE, CLICK ON THE FLAG ICON AND REPORT IT.

Also, report the developer's profile for scam and blacklist all his games by clicking the IGNORE button on their store pages so he won't see a cent from any of us again.

Finally, under no circumstances send emails to this "developer" asking for new keys. Not only is the "game" not worth it, but also an individual who scams their player base like this cannot be trusted with any of your personal info.

Copypasting very useful review which summarized it perfectly: On 1 April 2020, the "developer" of this game illegally revoked thousands of keys he sold for it on Fanatical, harming all Steam users who paid for those keys or received them as gifts. Valve needs to make it harder for developers to simply revoke keys at will like this. In most jurisdictions, according to consumer defense laws, Valve would also be considered legally responsible in these cases, since it is their Steam platform that allows the generation of those keys and their revocation. UNTIL PEOPLE START MASS REPORTING THESE CASES FOR FRAUD OR LEGAL VIOLATION, VALVE WON'T DO ANYTHING. SO PLEASE GO TO THE GAME'S STORE PAGE, CLICK ON THE FLAG ICON AND REPORT IT. Also, report the developer's profile for scam and blacklist all his games by clicking the IGNORE button on their store pages so he won't see a cent from any of us again. Finally, under no circumstances send emails to this "developer" asking for new keys. Not only is the "game" not worth it, but also an individual who scams their player base like this cannot be trusted with any of your personal info.