As the title. I play a lot in DCS: World. It’s a very realistic flight simulator, but doesn’t have much of a “World” ground wise. That, and the engine is really starting to show it’s age.
I dream of what could be done in UE5. Not only could it be realistic flight simulation, but vehicle simulation and fps at the same time.
Now that would be a World.
I’ve been playing around lately with the JSBSim plugin and the Cesium plugin. I managed to get an F15 up and running in an afternoon. It uses the Cesium plugin to stream terrain and world data and the JSBSim plugin for the flight model. I’d like to try switching it over to the ArcGIS plugin for terrain and world data to see what the difference is, but to be realistic, for me to even get a single plane sim to the level of something like DCS, well, I fully expect to be dead before I could even get close 
. But still, it’s fun to play around with.