Ah!
An example of a card game we have is "Whot!"
https://en.wikipedia.org/wiki/Whot! Similar but different to the Rouen play cards in that it has four suits ( but they are Square, circle, star, and triangle) then there are also no court cards and the numbers go up to 14. This is the most popular one, but we have other local card games.
That being said the deck i'm basing my custom deck on the International standard we all know today and most of the people in this forum are used to. I am a poker player so it only came naturally to create a custom deck based on the international standard but with a Nigerian twist. Attached is a mockup of what I'm working on, there is more to come.
It is basically a deck of cards, where all the court cards of all the suits are tribal leaders of the four major tribes in Nigeria. So each court card is different and unique. I am trying to give it the traditional french feel with a twist, so you can use it for any games you already play with a typical bicycle deck for example. Tryin go keep the user experience as familiar as possible while being unique in its art. Also going for a collectible item so the tuck box will have multiple foils and the cards will be printed by USPCC for longevity. This is a passion project for me, but I hope other people like it too