Factorio Forums

The Pentapod egg recipe (30 Nutrients + 60 Water + 1 Egg => 2 Egg) doesn't seem to obey the same productivity rules as other recipes. When the purple bar fills, it only grants 1 bonus pentapod egg instead of 2. Placing 2 pentapod eggs in a biolab (with the default +50% productivity) results in 5 eggs instead of (what I would expect to be) 6.

Most other recipes in the game do "one extra craft". For example on "Nutrients from yumako mash" (4 Yumako mash => 6 Nutrients) placing 8 Yumako mash in a biolab results in 18 Nutrients.

I do not know if this affects other recursive recipes.

I am aware that changing the behavior might break some existing Gleba bases (as having more eggs all of a sudden where you can't consume them may cause them to hatch and eat up the base). However, I also cannot figure out if the current math is intended or not.

Note: The production rate indicator when hovering the biolab calculates (0.33 eggs/sec) the current behavior, where you only get 1 bonus egg.

Thanks for the report however there is nothing wrong with this recipe. The original 1 pentapod-egg is considered a catalyst and as such is returned back as the product of the recipe without applying productivity bonuses to this. Productivity only applies to the 1 extra given. Exactly the same behavior happens with the kovarex-enrichment-process recipe where you need to provide 40 good uranium items but in return are given 41 good uranium. In that case the 40 is the catalyst and productivity does not apply to it, productivity only applies to the excess of items above the catalyst amount.

Thank you!