Talk:Slime Science/@comment-31963554-20170804233723/@comment-31826059-20170805002132

The master tier once need to be found in treasure pods in the Glass Desert. As for the Advanced ones, I don't remember, but I think they unlock after a set amount of extractor cycles are finished (after which you will need to buy them from the builder's shop, I believe), so you may need to place extractors and wait for them to finish extracting stuff to get them. It certainly isn't amount of gadgets built.