Factorio Forums

Posted: **Mon Feb 09, 2015 12:51 pm**

hello,
who become i the blue research bottles?
i have red and green, but no blue

Posted: **Mon Feb 09, 2015 12:55 pm**

If I remember correctly you need to research battery for blue science.

Posted: **Mon Feb 09, 2015 5:42 pm**

FishSandwich wrote:If I remember correctly you need to research battery for blue science.

This is your lucky day!
Tree:
Steel->Oil->Sulfur->Batteries; and then blues should be unlocked

Posted: **Mon Feb 09, 2015 6:15 pm**

all right, it works!

thx

blue research bottles