EA has made Battlefield 4 available through its 'Game Time' programme on Origin, offering players free access to the game for an entire week.
It's the same as what the company did with Titanfall , basically, except you're going to get a lot longer than just two days of play.
Simply visit the Game Time page on Origin to download the game to your library and you'll get 168 hours credited to your account. Remember that the clock runs in real-time, not while you're logged in to the game, so you can't store it up - once you start up Battlefield 4, that timer starts ticking down.
The free game time includes the single-player campaign and all forms of multiplayer, though obviously you won't get any of the extra DLC maps.
The offer runs out on August 14, so grab it while you can. If you want. I mean, you don't have to.