.epub is an ebook format. Sometimes, uploaders change the file extension to bypass "copyright filters" on cloud storage sites.

If a download link for Battlefield 3 is smaller than a standard high-definition YouTube video, it’s too good to be true. Stick to official sources to keep your PC safe and your gaming experience smooth.

or other non-executable formats) are typically scams or containers for malware. The Truth About Battlefield 3 File Sizes