Each alien you interrogate provides a permanent, passive reduction to research time of all projects within a branch of the tech tree.
Example (first three):
(SPOILER)Sectoids reduce research of lasers by 50%.
Floaters reduce research of basic armor by 50%.
Thin Men reduce research of UFO tech (Satellite Nexus, Elerium generators, etcetera) by 50%.
I'll let you discover the rest.
My ProgressOh, yeah. I've finished all availible research. I have a Firestorm with an EMP cannon in every territory. I have no panic anywhere on the globe. I have a squad of full Colonels and all Plasma weaponry and Titan armor. I have a squad with 6 Plasma Shivs, 2 Hover, 2 Alloy. I have a Blaster Launcher for my Heavy. I have satellite coverage over the entire world. I have over 6,000 credits, and over a hundred engineers and researchers. I have interrogated and autopsied every species in the game that I can thus far. I have my base totally dug out, with most facilities set up (save some space in case I get later ones).
I think it's time to pay the alien base a visit.



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