For those that refuse to install Origin on the computers, today may be the day to change that. First, Battlefield 4 is completely free for 7 days, find it here. A full week. Single-player and multi-player is completely open for you to go nuts. There are no real restrictions besides having Origin installed.
In addition, Kingdoms of Amalur: Reckoning is free for 48 hours. The timers start as soon as you click play. I’m not sure why PC gamers with rigs that can handle the games aren’t already installing them. Finally, Wing Commander 3: Eye Heart of the Tiger is “on the house,” which means free forever as long as you pick it up while it is at that sweet, sweet price.