This idea has been posted in the casual section already, but it hardly received any replies, so perhaps it didn't have the right audience. I'm reposting it here, and if there's more interest, I will change my expectations of game complexity accordingly.
This is only a summary meant to convey the basic idea of what the RP will be about, with a lot of finer details left out that will be included in the actual game thread. But if you want to know now, feel free to ask questions.
As the RP is based on a spinoff of Fate/stay night, I assume that the people reading this already have at least a basic understanding of the Holy Grail War in FSN. If you don't know anything about FSN at all, but still want to join, you might have to read things up on the wiki a bit.
Summary:
As the title says, this will be an RP based on some of the mechanics from Fate/kaleid liner Prisma Illya, more specifically the Class Cards. To those who haven't read the manga or watched the anime, a Class Card is a magical card that contains the power of a Servant, which can be used in two main ways:
Include, which uses a Mystic Code as a medium to manifest the Noble Phantasm or some other small part of a Servant; and
Install, which merges the Class Card with its user, partially overwriting the person's existence with that of the Servant and granting the person the power, skills, and Noble Phantasms of the Servant, while changing the person's appearance and clothes to match. Thus, instead of with conventional Servants, the Holy Grail War of this RP will be fought with Class Cards.
One thing I should make clear, though, is that while this RP will use the
mechanics of Prisma Illya, specifically the Class Cards and the Ainsworth Holy Grail War, it will not focus on the magical girl or loli fanservice aspects. Unless a player wants to make a magical girl character, of course, but that's a different thing altogether.
This should illustrate the difference between what the title might suggest and what I'm trying to go for.
Setting:
The setting of this game will be one of the many parallel universes in the Type-Moon multiverse, one that's similar to Miyu's universe in Prisma Illya.
Since a few decades ago, the world had begun slowly dying, its mana drying up and being replaced by a mysterious dark particle called "Grain", which is toxic and inimical to all forms of life. Two centuries ago, a great ritual was held by the Ainsworth, Tohsaka, and Makiri families, three of the greatest magus families in the world, to attempt to reach the Root, and that ritual is now being resurrected by the Ainsworths of today to improve the world's conditions. The Holy Grail periodically summons Servants in the form of Class Cards, mindless degraded copies of the original Heroic Spirits that scatter around the world and absorb mana out of an instinctual desire to complete themselves. Seven prominent magi have been chosen by the Holy Grail to be Masters, and once a Class Card has absorbed enough mana to reach maturity, the Masters are sent to defeat and retrieve the Card. The mana gathered by the Card is sent to the Grail, while the Master who defeats the Card gains ownership of it, and becomes able to borrow its power. Masters are allowed to fight to take each other's Class Cards as well, and the Master who obtains all Cards at the end of the War becomes the victor. As the Holy Grail expends the collected energy at the end of the war to work its miracle and repair the world, the winner will be allowed a personal hand in the process, deciding the new form that the world will take and thus potentially granting one of his dearest wishes. And so the Ainsworth Holy Grail War begins, fought by seven Masters but many more Servants.
Some more information on Masters and Class Cards:
Class Cards are not limited to one per class, and each Master can possess multiple cards. Players can submit new Servants to be summoned, but there's no guarantee that a Servant you created is going to end up as yours. Each Master starts with a single Class Card already in his possession, and those specific seven will be one for each class, but aside from those all classes are fair game. And yes, starting Cards can be taken away by force too.
There will only be seven Masters, and each player is only allowed to create one Master character, but other non-Master characters can be created by players. The game should be focused on fun and creating an entertaining story, so I'm going to stop you if you try to abuse this to make yourself an army of followers just for the sake of winning.
Alternate universe considerations:
Since this is an alternate universe,
none of the canon characters should appear, except the Servants, which are mostly mindless and all copies anyways. Alternate universe versions of canon characters can exist (e.g. Miyu compared to Illya), but those are still different people, and thus should have different backstories due to the alternate history. More specifically, the Ainsworth family has replaced the Einzbern family in this universe, so the Einzberns either don't exist at all, or have much less prominence.
On the other hand, many details of this particular universe are still open, so players can fill them out if they wish.
Lastly, a disclaimer:
I am only a relatively casual Type-Moon fan. I have watched the Unlimited Blade Works anime, as well as all seasons of Prisma Illya, and read all chapters of the manga, but I have not read the original Fate/stay night visual novel or any of the supplementary materials. I
have done what I believe to be large and extensive amounts of research on the wiki, but as I said, I'm only a casual fan, and thus not
obsessive about strict canon accuracy. Sure, I'd like to avoid blatantly obvious contradictions of canon when possible, but I'd rather be flexible and focused on fun, than making sure absolutely everything is as accurate as possible. So please, if you're the kind of hardcore fan who would get really bothered upon seeing me bend the setting's rules a little, this RP might not be for you. Likewise, players will be asked to try not to blatantly contradict anything in canon, but quite a bit of leeway can be given on how the setting's rules can be bent.
That's it for now; I'll give more details in the game thread if enough people are interested for the game to be a thing. So, anyone interested?