Battlefield 4 is currently available for free on Origin, and will remain so until August 14. It's a trial period, but any progress made during that time will be saved, just in case you grow an addiction and decide to pick up the game thereafter. The promotion comes under the banner of Game Time, and it follows a similar offer whereby the publisher offered gamers limited-time access to Titanfall a couple of months back. If you click the link above, it seems you can also get 48 hours of access to Kingdoms of Amalur: Reckoning, if you prefer swords over shotguns.