Pretty great if you actually own the games in question.
You can grab Battlefield 1: They Shall Not Pass and Battlefield 4 Dragon’s Teeth for free for the next two weeks. And, as a matter of fact, it’s not just free for PC; you can also get them for Xbox One and PS4, too.
For PC, all you need to do is log in to Origin, and go here and here. Add them to your account and they’re yours to keep. The process is much the same for Xbox One; sign in, go here and here, and add them. For PS4, these are the links you’re looking for.
So grab them now, or forever hold your peace.