From IGDB
You will be mining resources, researching technologies, building infrastructure, automating production and fighting enemies. Use your imagination to design your factory, combine simple elements into ingenious structures, apply management skills to keep it working and finally protect it from the creatures who don't really like you.
Genres
Simulator · Strategy · Indie
Themes
Science fiction · Survival · Sandbox
Where to play
Factorio is on Steam. When the eventual Tavern store launches, you'll be able to buy it through Tavern with full transparency about the +$0.05 convenience markup — but the actual transaction will still happen on Steam, and the game lands in both your Tavern library and your Steam library.