Factorio Forums

http://store.steampowered.com/stats/

... and Factorio currently sits on 58th slot. If you want to see exact history, you can go here:

http://steamcharts.com/app/427520

The fact, that this game has so many active players is a huge tribute to the great job the devs are doing, especially timely updates, Friday Facts, great community cooperation... I'm fairly fresh here, but I'm very impressed with all the hard work done so far.

Thanks again for making this awesome game!

I have to ask; is it any wonder that Factorio is so popular? There's so much to do in it and so many great mods that add new items to make production lines to. After that, there's bobs, angels, etc to keep the game alive.