Okay, the game isn't out yet, but it will be very soon. The early access Pre-Alpha build will be available for free download from this website some time in the next few months.
Once the game is released, it'll be available for early access download from this very page on the website. So once it's released it'll be free to download.
If you want to keep up with the development of Final Escape, check out the Development Page, or My YouTube Channel. I'll be doing development updates on the game for everyone to see.
I'll probably be doing progress reports of Final Escape much more often on the Development Page on this website, but I'll still be doing progress reports on YouTube every now and then.