While there is no single widely-known creative work titled exactly "…Knew the Beginning," several closely named books and games exist. Based on your interest in a "Free Download" and a review, here are the most likely matches:

: Set in a post-apocalyptic world, you wake up in a bar and must help the local bartender. It is praised for its atmospheric storytelling and classic adventure mechanics.

The phrase "knew the beginning" is a common trope discussed by famous authors regarding their writing process: