One of the best games of 2015 is officially free on Steam, well, atleast free for the weekend. Paradox Interactive recently released DLC for Cities: Skylines, which might be the inspiration behind making the game free this weekend.
In addition to the free weekend, Skylines is also discounted by 60% for both the Standard and Deluxe versions of the game, putting the game at $11.99 and $15.99 respectively. The discount will only be available this weekend, so you need to decide whether of not you want the game rather quickly.
The DLC for the game is also discounted, making bother the After Dark and Snowfall DLC available for $7.49 and $12.99, respectively.
