I'm at a stage of the game (year 148, 58 kittens) where I am needing large quantities of iron. When running my smelters at max, plus my mines, I gain 1.1 coal per second and 2.5 iron per second. My auto crafter will make steel from that, effectively meaning i only get 1.4 iron per second net.

I contemplated removing steel from my auto crafter and accept that I'm earning coal that I'm not spending. It's not as efficient, but at the same time if I'm heavily delaying my observatories, ships and harbors then it maybe it's worth it.

I have about 1500 steel stockpiled. Is this going to be enough? Or should I tough it out because it's more efficient in the long run to have that steel stockpiled?

  • I think all the global prouctivity boosts that get unlocked require primarily steel, so cutting steel production for a temporary iron boost probably isn't worth it long-term
    – Sconibulus
    Oct 15, 2016 at 2:52
  • @Sconibulus Could you give me an example of these global productivity boosts that i can look at and map out?
    – corsiKa
    Oct 15, 2016 at 3:16
  • Steamworks and Magneto work together for a production multiplier, taking steel and alloy(which takes lots of steel) respectively
    – Sconibulus
    Oct 15, 2016 at 11:50
  • You'll need to make gears later on and that takes 15 steel each. My 9th Steamworks need 119 gears (285 steel with my workshop ratio). Later on alloys take 150 steel each.
    – Nelson
    Oct 17, 2016 at 1:37

1 Answer 1


Right now it might seem as you need only Iron, but sooner than later Steel will be much more valuable. And gathering Coal get's harder and harder (due to Steamwork).

So a good advice would be not to let any coal get lost.

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