Some settings are seemingly better for fanfiction writing than others. One example, which was part of a major craze on Spacebattles, is the light novel/anime series called The Familiar of Zero. The plot is basically this-in a fantasy world similar to early modern Europe, a bumbling mage named Louise summons a bumbling Japanese teenager named Saito as her familiar. “Antics” ensue.
The FoZ craze had external factors going for it, such as a popular Fanfiction.net author kicking it off. However, the way it was sustained had a lot to do with the setting. Namely, there were just the right factors for why it got so much attention.
-First, the summoning mechanism allowed for a lot of easy, “built-in” crossover opportunities. For a fanfic writer, making a crossover would be as easy and natural-seeming (unlike contrivances) as “Louise summons _____ instead of Saito.”
-Second, the setting itself was viewed as something potentially interesting, motivating the “fixfic” interest. Unlike the traditional swords-and-sorcery, this was an early modern musket setting, making it stand out conceptually. In addition to this, the “mechanics interest” group liked the intricacies of the magic system (A lot of Spacebattlers like anything that seems quantifiable). That the original works squandered this in favor of “antics” made the motivation all the greater.
The FoZ craze has now burnt itself out, and the new hot fanfiction topic is a web-novel called Worm. That has plenty of its own reasons for the waves of fanfiction, but that’s another story.
Now, there is another work that, despite its popularity, has featured very, very few fanfics. Having finally reached the “Infamy Rank” in Payday 2, I can see why that series has so few entries on fanfiction.net. The setting seems to have everything that went for FoZ going against it. On paper, crossovers could be possible, and in fact official ones have been done in the game itself.
-The setting is much more rigid. Being an un-supernatural, at least nominally grounded modern world, a writer is more limited in what they can actually make. Not that that would stop anyone who really wanted to do something differently, but it’s still an obstacle.
-More importantly, it’s less conceptually interesting and tougher. Being built as a game where the player follows their character by default, there’s no need to ‘hook’ them. The existing characters are some of the least sympathetic protagonists anywhere, and they have just enough personality so that the author can’t use them as blank-slate protagonists like an RPG customizable character.
The modern action setting isn’t novel or possessing of much opportunity to ‘fix’, and is made worse by the game being hard to extract from its mechanics (in-game and the few cutscenes, the Clowns can mow down waves of officers who charge blindly forward, and then can stay hidden-to apply even the slightest amount of plausibility to it would be a Herculean task).
This doesn’t matter for the game itself, but does for a fanfic of such a work.
Of course, hindsight is 20/20, and the internet can be weird. If Payday had spawned a giant fanfic community and FoZ been left with a few scraps, I would probably be writing a blog post on how it was natural that such a popular and already crossover-apparent setting could have so much writing (just look at how easy it is to insert a new heister/rogue, since they did it in canon-etc), while totally understandable that a mediocre goofy anime would be left in the dust (Well, how can you make anything good from a silly little “antics” show-etc). But I still feel that some settings are just more fanfic-friendly than others, for reasons other than the popularity of the original/canon work.