[quote=@Jyoliod]
I craft like three solid story and RP ideas by lunch most days, though more often than not I'm not all that interested in using them. Either way, I will make use of this resource by editing this post from time to time. Though I don't like to limit a persons own creativity or ideas, so anything I post will not require permission and can be changed at will. Though I'd like to know if one of my ideas is being used so I can read along and see how it pans out!

But here is an idea to kick things off, it's one I used for a solo-rp when I was a bit younger, it created a memorable and enjoyable experience I often still think about.

[hider=Demon Decks]
[b]Genre:[/b] Horror, Modern, Action, Supernatural, Mystery

[b]Premise:[/b] A quiet secluded town is suddenly attacked by strange creatures in the night, a few deaths occur but ultimately the attack is small. The locals mobilize on the situation quickly in order to secure the peace and prosperity of the quiet little town. A new curfew is enacted and a local campaign geared at warning and informing the public of the dangers of not securing their house at night is launched. The towns plead for help is met with an unusual demand from the local military forces to keep quiet about the situation.

Meanwhile a group of students from the local high-school decide to take matters into their own hands. Among these students are a number of people who were gifted an unusual deck of cards that appear to float and hover when dropped or thrown. The night comes when the group of high-schoolers arm themselves with make-shift weapons and hit the streets to engage the monstrosities that have kept them in fear of the night. Unprepared and unaware of the full extent of the danger they were facing, only those gifted with the decks survive, making use of the unusual powers of the decks.

[b]Details:[/b] The RP is based around an idea that players are given a deck of thirty rather thin, metal cards. The deck itself contains a demon that had been captured, tortured and twisted into a new form of various items, these items being weapons and armour of different designs. The items are entirely useless when separated from one another, but assembling them all together can risk the reformation and release of the demon that the items come from. So to get around this, aspects and items of the demon were phased into a 'static' dimension where time does not exist, and each card acts as a 'key' to this dimension, allowing a user to reach into the card and pull out an item. As long as the user has the deck with them, the item is still useful albeit somewhat weakened.

The deck's demon is able to communicate with the owner, so constructing a personality for your deck would be required in the CS. Further more, use of the cards is chronological, only one of the cards can be accessed at first and only this card has an image of it, the image is of a weapon made from the demon. But as the user pulls items from the cards, more cards become accessible to them, and not all thirty cards are items, some contain, say, the flame of the demon, essentially making a card a 'spell' that shoots flame from it when the card is touched or hit by the item of a card the precedes that card.

[b]Clarification:[/b] Here is an example of how the deck would work; a user looks through their deck and notices only 1 card has an image, it's an image of a rather plain long sword. They let the card hover in front of them by 'dropping' the card in front of them, then they reach into the card and grasp the long sword, pulling it out of the card. Now with the long sword in hand, they look through the deck again and notice three cards now have images, one is of a flame, the other is of a shield, while the third is of the same sword the user is holding, only the blade is more stylish and has runes on it.

To use the flame card, the user can throw the card in question in front of them, so it hovers slightly before them, then swing their sword at the card and hitting it, causing all moment of the sword to stop and then that momentum suddenly comes out of the card as a huge flame. The shield card can be reached into and grasped, allowing access to other cards in the deck that relate to the shield, but the shield can not interact with the flame card, as the flame card only appeared when the long sword card was 'played'. Finally, the stylish blade card, can be 'stabbed' by the long sword and when the user pulls their blade out from the card, their long sword will have taken on the design of the image on the card and is more powerful. This 'upgraded' sword may also give access to more cards in the deck too.

[hr]
[i]I used two characters when I played this RP, one character used a huge knuckle gauntlet that covered their fist, wrist and forearm, the other used a staff and was ranged/spell based. Though I did entertain the idea of a marionette user based deck.[/i][/hider]

[@Keyguyperson] if you could let me know if the above format is an issue or lacking that'd be great and I'm more than willing to format it to better fit in with your ideal post in this regard-should such a thing exist-.
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That is a great idea. I'd love to have a GM do this. It'll be cool to create your own deck (and run by each tree progression of cards by the GM first).