I actively avoid games as a general rule due to the amount of time one can sink into them, and how relatively unproductive that time is... but wow I’ve fallen deep into Factorio on a few occasions. Fantastic game.

Does not look like it’s launched/final yet... what os do my you need to run it?

It's stable. Most of the core community even hangs out on the "experimental" upgrade channel, because even that seldomly has noticeable bugs.

As for content, I'd say there's enough of it, especially if you include the content that the modding community has produced.

The biggest problem here might be that it doesn't really drag you through that content, as it's a sandbox game. There's no real goal.

You sort of build a factory to produce components for building your factory, to produce science for unlocking components for building your factory.

Also, there's alien creatures that dislike you building a factory (or rather the pollution from it), so they send a small squad every now and then to try to smash your stuff. And when you want to expand your factory, you have to smash their stuff. But their AI is rather limited, so it's not a central component of the gameplay.

All in all, I think, it's best described as a sandbox puzzle game. How do you wire up your belts, pipes, rails and wires to produce the thing that you want to produce in the least spaghetti of ways?

Thanks. Will give it a shot.

Factorio is one of those early access successes, it could launch as-is and be fantastic.

It has support for Windows, OSX and Linux.

It's quickly approaching a 1.0 release, and from what I hear when that happens it's going to see a price bump as well.

By 10 USD on the 16th: https://www.factorio.com/blog/post/016-price-change