So one thing in Stellaris is that there are numerous ways to deal with xenos. Soon they'll be food, we could just purge them or turn them into slaves but playing Horizon Signal made me realize another potential, turning the xenos into your own race with a biochemical virus or setting up a facility where they're forced to change into your race. This could lead to new events like a revolution or (with the aid of a mind control ray and state propaganda) lead to a more peaceful way to change them.
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