If you are looking for the official version or a safe way to play, here is the essential information:
: Downloading executable files from unofficial "free download" sites carries a high risk of bundling unwanted software, miners, or viruses with the game data. Catherine Classic Free Download (v30.12.2020)
: The "v30.12.2020" string usually refers to a specific update or "crack" release date from unofficial sources. If you are looking for the official version