I have no idea what any of this means
The following sentences appear directly before the download: "You claimed this anti-power fantasy [...] with Free Community Copies. This page is linked to [my] account." What does that mean?
It means that now you have a game from your community copy is all. When you get games from community copies you are claiming a copy for yourself.
Okay, thanks for the explanation, I understand it now.
No problem! Let me know if you have further questions.
