AnyLogic is able to create 3D simulations in 3D objects, although the standard development environment looks 2D.

If you go into Help -> Example Models you will find one model called Pedestrian Elevator which should provide you with some basic functionality and you can inspect the code to learn how it is done - you can also view the model online at https://cloud.anylogic.com/model/4636a3bd-b9bb-47e0-9efa-7119e332109b?mode=SETTINGS

It is important to notice that AnyLogic focus right now is on the simulation and results, and thus the 3D capacities and rendering will not be as realistic as Unity. This is being worked for next versions and they had a very nice presentation on the last conference which can be seen at https://www.youtube.com/watch?v=beOPLvW75cY