about 6 years
ago -
TheLetterZ
-
Direct link

We're having a Free Weekend!
The game will be Free-To-Play on Steam through Sunday, March 24rd, and if you want to keep building your cities after that there's also a solid sale on the game itself! The 75% discount brings the price down to $7.49 / £5.74 / €6.99.
Let's play!
https://store.steampowered.com/app/255710/Cities_Skylines/