Multiplayer Game using Cardano

In my multiplayer online game, I want to implement Cardano for asset management, contracts and payments (internal and external).

Over 25 years experience in programming, financial and computer science studies.

The game is a sci-fi, strategy, tycoon multiplayer cross-platform game.

The goal is to have 50.000 subscriptions to the game. More with the free-to-play version. The game will be constantly expanded and new storylines introduced. The storyline is the main driver to keep players hooked.

The main justification for the amount: 2 programmers, 1 graphic designer (with equipment) and the rest is planned for marketing.

The cross-platform game is based on a book, which is as well in development. The book gives the context of the world the player is playing, democratized, unbound from nationality and now unbound from local currencies.
Find here below the Blurb.

Blurb:
Jessica, an indifferent nerdy physicist and computer science Ph.D., in her late 30s, finally managed to be on the ISS. She is planned to execute a major quantum entanglement experiment that she created and that could leapfrog humanity's way of communicating. Everything goes as planned until, to her and everyone else's surprise, an alien ship shows up and Marvin, the alien, visits them with some disturbing news. News of the impending doom of humanity.
Confined in his own "rule set" and still wanting to save humanity, he chooses Jessica to be his surrogate. It is up to her now, with the knowledge given, despite the personal, political, and societal challenges, to steer humanity not only to safety but to basic survival.
The book touches on the personal, political and societal challenges one would face when given the tools to protect and unite humanity under a never seen menace.
What would you do?
How would you do it?
My intention is to deliver a sci-fi story and a game, as faithful to science as possible and if not, using a possible solution that is not yet proven (maybe never will).
I have extensively researched Quantum physics, Astrophysics, Geopolitical and Social patterns for more than 20 years. I have always wanted to write this story for well over 20 years with two premises: Is it possible to unite humanity and if yes, how would one do it?
Money plays a critical role and cryptocurrency, especially Cardano, in the way it is designed, is a way a perfect way to solve one of the problems.

This is not a small game and it is my life's work. My intention is to continue to develop for the next decades.