I'm playing Fallout 4 and I've had the Mysterious Stranger perk for a while, recently I noticed he completely stopped appearing, earlier he used to appear quite often. I haven't added any new MODS since.
Is this a bug, and how to fix it ?
(It was fun having him pop up suddenly)
I have the level 1 perk of Mysterious Stranger and I know that the rate at which he shows is 10%.
Best Answer
As I mentioned in the comments:
To elaborate slightly, what this means, is that every time he is eligible to show up, he has a 1 in 10 chance to do so. This means the game randomly selects from 10 choices: 9 "no's", and 1 "yes". That chance is fairly minimal, and is entirely legitimate that this can happen indefinitely. I.e., there is nothing wrong with your game.
This is not the same as "stacked chance". Some games use a system that have a low percentage of success, but with every failure, increase the chance of success. E.g., You may start with only a 10% chance of success, but when ever you fail, that chance of success increases by 10%. You still have the chance to fail, until you have failed 9 times, in which case you have a 100% chance of success. Fallout does not use this system.
Try levelling up the perk (This does require you being a higher level though). From the wiki:
This doesn't increase that chance by much, but it can help.
From my experience with Fallout 3, New Vegas, and Fallout 4, I too have experienced large "droughts" where the Mysterious Stranger will just not appear. Sometimes taking up to 24 hours of gameplay for him to reappear (spread over several weeks, making it feel much, much longer).