One of Steam's best strategy games is free right now
Crusader Kings 2 is regarded by many players as one of the released to date. Developed and published by Paradox Interactive, this medieval-themed game is one that you can certainly pour hundreds or thousands of hours into. If this sounds like something you'd be interested in, then there is no better time to grab than now as it currently sits free to download (and keep) on Steam's storefront.