Given the structure of the filename, it's likely that "TreeCardGames.Keymaker-RadiXX11-BTCR-DFoX.7z" serves one or more of the following purposes:
If you are looking to play card games safely without the risk of infecting your computer: TreeCardGames.Keymaker-RadiXX11-BTCR-DFoX.7z
TreeCardGames frequently updates their software to fix bugs. Pirated versions cannot be updated, meaning you're stuck with an old, potentially buggy version of the game. Better (and Safer) Alternatives Given the structure of the filename, it's likely