Factorio Forums

There could be a boss battle that when you collect over 2,000 alien goo you could summon a giant alien boss then after you defeat him then you can trade and interact with the aliens

Already mentioned many times. Some examples: https://forums.factorio.com/forum/sea ... s&fid[0]=6
Moved to suggestions.

Use 2000 alien artifacts to craft an Alien boss... I could probably mod that in. It would be an upscaled biter with a single attack, but I could do it.