Difference from professional engines

We, the WorldSim3D developers (because we develop it for fun, not for money or something else), have absolutely no desire to compete and chase modern professional engines that make professional games in studios with large budgets. Illustration: I would compare professional game engines with large trucks for making money, and the WorldSim3D with small cars that they "work" for themselves: just drive them and enjoy.

So, the thing is not about there is or there isn't a certain feature, but the concept: WorldSim3D is a hobby, not a job and a user shouldn't take everything too seriously.