If you want to vibe a game... my best advice to you is: keep it super simple and don't go crazy on features. The less complex, the easier it is. Once you start going wild on what to add, it'll spiral ...
Reeks of superior knowledge gained on Mars. :D Have you found different outcomes when a) starting with a simple structure and then adding more features or b) starting with an already complex design? I think the trad wisdom is "a" would usually work better for most systems. But with AI, idk.