Expansion to the Modules system.
Mods introducing new content into the game.
Furnaces, assembling machines, production chains.
As the title says, modules at tier 3 do not require any module contacts to make, as opposed to all other module tiers. Was this the intended recipe?
It was intended, even though it's a strange quirk, because I was monitoring how many components each recipe cost, based on tier, and there was 1 too many than what I wanted in T3, so I dropped the contacts.