Factorio Forums

*first spotted at 0.17.34*
Many multilevel technologies for levels above 1 and before infinite stage don't have corresponding science packs as prerequired technology. Therefore, they can be queued before science packs can be produced.

Full list (sorry for my english):
* shooting damage & shooting speed (lvl 2: green; lvl3: military; lvl 5: blue; lvl 6: yellow)
* character logistic slots (lvl 2: blue; lvl 4: yellow; lvl 6: purple)
* character trash slots (lvl 2: blue; lvl 3: yellow; lvl 5: purple)
* research speed (lvl 3: blue; lvl 5: purple; lvl 6: yellow)
* explosive damage (lvl 2: military; lvl 3: blue; lvl 4: yellow)
* inserter stack bonus (lvl 3: blue; lvl 4: purple; lvl 7: yellow)
* mining productivity (lvl 2: blue; lvl 3: purple & yellow)
* laser shooting speed (lvl 3: blue; lvl 5: yellow)
* laser damage (lvl 4: blue; lvl 5: yellow)
* fire damage (lvl 3: blue; lvl 4: yellow)
* robot following count (lvl 3: blue)
* worker robot speed (lvl 3: yellow; lvl 5: purple)
* train tracksion force (lvl 3: purple; lvl 6: yellow)
* worker robot capacity (lvl 2: purple; lvl 3: yellow)

viewtopic.php?p=401353#p401353

V453000 wrote:Other mid-tiers of number upgrades do not get all the pre-requisites as that should already be obvious from science pack icons under the technology icons, and it would probably make the technology tree look way too messy.

Why then science pack technologies are set as prerequirements for other technologies?

Because they're not mid-tiers.

Then what defines term "mid-tier"?

Everything between the first tier and the infinite tier, exclusive.

tehfreek wrote: Sun May 05, 2019 1:17 pm Everything between the first tier and the infinite tier, exclusive.

Then following technologies are NOT mid-tier:
* shooting speed
* character logistic slots
* character trash slots
* research speed
* inserter stack bonus
* laser shooting speed
* worker robot capacity