By the way I tried factorio's demo and it's awesome
That's just scratching the surface though, there's so many hours to waste tinkering with your factory on full game
It's also worth mentioning the game is moddable and there's a bunch of mods out for it already. Stuff that's planned for next releases:
- Multiplayer
- Proper endgame content
- Oil extension (more stuff for oil)
- Fight revisit (more stuff for combat, new enemies)
Considering game is still in (late) alpha, I'm excited.