Does this mean self-hosting the wiki?
Because that increase the barrier of entry by tenfold as a lot of publishers/game studios do not host their own wikis.
It really just depends on the fandom. Three more I know of are Bulbapedia for Pokemon, The Unofficial Elder Scrolls Pages for the Elder Scrolls, and Wookiepedia for Star Wars. They are all very comprehensive and functional.
Unless the game your playing made their own, or someone else decided to self host and actually fill it with content (and finding it can be a pain), there isn't one.
Hoping someone knows a good fallout wiki, I hate using fandom, but it's the only one I can find with good info.