The Last Detective

I've created a game that is a last of us inspired narrative TTRPG. It's about dealing with human conflict in a post-apocalyptic world. Hopefully I'm trying to get it out for Halloween because it's, you know, might as well get the spooky vibes. And then from there, I also have written an adventure for Pathfinder 2E and will be writing more adventures that'll be published on Pathfinder Infinite. So yeah, how many dice do I need for your system? Just like the indie, I made a D20 system.