I started to play CC literally when Orteil created it in 2013 but I don’t have the same save game from that time. I started a new game 249 days ago and I haven’t finished it yet. Still, it depends on what you consider as finished, there’s a shadow achievement where you need to click 27.777 golden cookies which will probably take me a fucking lot of time, but maybe you’re okay with only finishing regular achievements, that will probably take something about a year, or a year and a half maybe. Don’t get scared, though, it seems like a lot of time but you don’t need to be active all the time (although if you do you will need less time to reach certain amount of production, but that’s insane). I’m going to post a screenshot of my game in the community so check it out if you are interested.

I’ll tell you one easy shadow achievement if you are interested. Change your bakery’s name to Orteil, and voila.