Simulation games like SimCity, and even the Sims, was something I grew up with, and your project sounds ambitious and cool.
You mention this is an ongoing work, so, tell me about your team, your goals and your current stage.
I have a team to help us in this journey.
You mention AI customers, so, can you tell me more about the status? That's is something I would think in advance from now.
Now, having said so, simulations games are HARD and requires time, money and hard work. Are you up to the challenge? What is your budget? In how much time you expect to have a fully functional product? What would the ideal scenario looks like?
The rates are a little higher than what you are used to paying.