For a limited time only, Crusader Kings II is currently available for free on Steam, download it today and keep it forever. Crusader Kings II explores one of the defining periods in world history in ... Crusader Kings II is FREE on Steam today
Was already yesterday, grabbed it (although I already own Europa Universalis 3 complete and EU4 with most of it's expansions). But afaik it's worth a try if you are into grand strategy games like these. edit: comes without the expansion sets, for anybody curious.
Won't get much of an experience without all the DLC. When you have all the DLC, Slap on top of it a mod called - Historical Immersion Project, and you will have WEEKS of fun ahead.
Yah, no doubt it is free because they are hoping you will buy some of the many dollars worth of DLC associated with this game. Still, not an awful idea to get some sales, a free game is a free game after all