And how i can find it in registry? I searched for game.exe and nothing. I really don't want to reinstall system
I don't know, take a look at this post
https://f95zone.to/threads/recent-malware-infected-games.207437/post-17708115, and read this thread in general, there's a lot of interesting stuff there. It's about a different game, so I can't give you any guarantee (and no one can) that it behaves in exactly the same way.
What has been detected
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Information about the most likely virus in the infection
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But keep in mind that just because nothing is detected doesn't mean there's nothing there — if a virus has made its way into the system, it can remain there undetected by any antivirus software, and it's almost impossible to remove it. So even if you change your passwords, they will also be stolen. It is very difficult to determine whether you are infected or not, especially if you are not an expert in this field, so it is recommended (even if you only suspect an infection) to completely wipe the disk and reinstall the OS. Only then you should change your passwords.
But it's up to you. If you think the threat is insignificant and not worth the cost of reinstalling the system, changing passwords, and other protective actions, I'm not going to try to convince you otherwise.