My #1, Diablo II? ;)
No, always wanted to play it.
It's probably something else, but your description meets many games, including Project Zomboid.
No, never heard of it.
No, sounds fun though!
Minecraft? Though not sure about the multiplayer aspect.
No, this game is even less diverse than that.
Hint 2: This game is characterized by doing the same thing over and over, but with a choice of different weapons. Getting more skilled with these weapons, is the key to enjoying this game. Building up different sets is always so fun.
Honorable Mention: Crusader Kings 2
I have been pretty bored and annoyed with Paradox games as of late so unfortunately CK3 and etc. has brought CK2 down with it. It becomes an Honorable mention purely because I quite enjoyed the time that I had with it, but the desire to play again is not so much there anymore.
#49 features historical figures from the country that I currently reside in. I visited a statue of one of the greats from that era, Masamune Date. I hope to visit Kenshin Ueseugi at some point.