Mimic world

I am looking for a freelancer to create a world for me on a desktop application. This world should be based in reality, and I need custom characters created for it. It should be a visually appealing and an immersive environment that I can use for my project. It should also be dynamic enough that users can create their own content within the environment. I am looking for someone who is experienced in creating complex visuals and has the ability to craft a detailed yet minimalistic atmosphere. If you have the skill set to complete this project, I look forward to working with you.