I've only seen Fallout and Tomb Raider. The latter was fine but Fallout is one of my favourite shows I've seen this year

I think Arcane is by far the highest quality adaptation of these five, but it's not the most faithful. I don't play LoL anymore, but I know that there have been changes to characters and stories.

I think it must be Fallout. The story is original and very well written. The atmosphere, setting and elements are very loyal to the franchise. The music is chef's kiss. Watched it with my wife, I've been a fan of the franchise for a while, and my wife being not very familiar with the games, and we both love it. So, for both new and die-hard fans to Fallout, it's a solid adaptation, loyal to the original, meanwhile having its own uniqueness.