A multi-part RAR archive (.part3.rar). This means you need all other parts (part1, part2, etc.) in the same folder to successfully extract the game.
If you enjoy the game's mechanics—often compared to Portal —you can find the official, safe version on legitimate platforms. This ensures your computer remains secure and supports the indie developers: (Check for frequent seasonal sales) Epic Games Store PlayStation and Xbox stores Are you having trouble extracting this specific file, or The_Entropy_Centre-FLT.part3.rar
Downloading or executing files like this from unofficial sources carries significant risks: A multi-part RAR archive (