As I didn't see the canon part answered, long story short the games are inspired by the books but are not considered canon (the author doesn't view the games as another way to tell a story).
You screwed up. That's the ending where you tried to romance both, and as a result, you get neither.
@Colerate even I don't know how you did the text like that O.o
But yes, while we saw a huge spike in views here when the show got released in December, we didn't see a huge increase in discussions. But at least people are posting (back when it was still using the old forums, almost nobody was posting in those).
That's not a specific drink. That's another name for referring to the container, like a flask, bottle, etc.
That's exactly what the medallion does: it creates illusions. Geralt used it earlier in that cave to trick the monsters into thinking he destroyed his sword, and then during the fight with Vilgefortz to trick the mage as well.
Actually, Geralt's actual age is never revealed by the author, or rather he contradicts himself too much to know what's the real one (he's done it before with other characters' ages, event years, etc.). He really needs to just put together a fact sheet of everyone's stats to lay it to rest but doubt that'll happen.
Depends if you want to play just to have played it or more interested in the story and the impact of your choices made in 2 (if you import the save over). That said, there's no penalty for not having an imported save like BioWare did with ME; CDPR made it so you can set choices near the beginning of 3 if you don't have a save to import over so you can still access extra bits by choosing the options that open up extra dialogue or quests.
It's helpful if you want a full background story of the relationships going on, but not really needed if you just want to play the games first then read the books.
Yes. The gear is part of a free DLC. make sure you have it installed, then you should be able to find the content.
No, it's from Sword of Destiny (in particular, follows the Something More short story in it).
The show makes it rather ambiguous, but in the books it was clear she did heal Geralt (otherwise he'd have died). As Geralt also warned the merchant in the books he might start crying out many women's names under the influence of the potion he took, it's hard to tell if the show decided to keep that part of the books or just do their own thing. Ultimately we may never actually know what they were aiming for here (if just a dream of if she was there).
Essentially, Geralt once saw only one half of a person come through what was supposed to be a safe portal and the other half was never found. That and the cold sensation when one goes through a portal.
Oh, that might be a bug then if you don't even have the diagram :(
Not a glitch as far as we know. The witcher crossbows never had a legendary diagram.
Well, basically a lot of things. The timeline is all screwed up from the books, the character personalities are pretty different for many secondary characters, and even parts that happened in the show are completely different from the books.
That's actually the sword Maugrim which its file name actually suggests it was originally meant to be Aerondight but was later changed.
Oh, so to clarify on that: in the books it's already an empire and referred to as such by the northern kingdoms. Netflix lore just threw it all up in the air and decided it was still a kingdom until Emhyr took over (like them taking Nazair in the show, that was already conquered way before the the saga started in the books).
^ Except it was already an empire way before the Northern Wars, with the first documented emperor around the 1150s (Nilfgaard went from being just a city on the Alba to taking over many of the southern countries).
It's never mentioned in the books, and was likely named specifically for Netflix. That aside, past monsters that CDPR had looked into but removed later on were influenced by various cultures and their myths, so it's possible it is based on the one you found.