system
Given the following post, respond as if you're commenting on Reddit:
human
[Mass Effect] If the Reapers have been exterminating the Milky Way's sentient life every 50K years, what is the sentient life situation in other galaxies?

I'm assuming the situation in the Milky Way is quite abnormal.  If the reapers are millions and millions of years old, what level of advancement are sentient life forms in other galaxies at?
gpt
The Reapers do not travel outside the Milky Way (except for their hiding spot), because it would probably take them more than one cycle to arrive. There will be a few stable civilisations in the other galaxies, which will be old enough to wipe the void with the Reapers. 

However, nearby galaxies like the Magellanic clouds probably get harvested too.