Alternately «
mod it until it breaks» with, amongst other great
mods, Millennium Dawn a total
conversion updating the game to a modern setting or an alternate history
from the USA still being a British colony, Germany winning WW1 or The War of the Worlds based on the H.G. Wells book and the Orson Welles 1938 radio broadcast.
However, XCOM 2 on the PC has a huge
modding community, with everything
from minor cosmetic tweaks to huge
conversions available.