What do you mean by this? The MSFS 2020 flight simulation is on par if not better than X-Plane: https://www.youtube.com/watch?v=Bw-opH4f8Qg
> but if you're interested in contributing to a product you can improve and have fun modelling/texturing additional planes, cities etc this is a project to get involved with.
Again, MSFS 2020's SDK is already with all of the major third-party developers and will be publically available upon its release. A couple have even swapped to almost purely working on MSFS products instead of X-Plane or P3D.
If you're going for extreme realism IMO one of the best tools out there is Pilot's Edge (https://www.pilotedge.net/). Real air traffic controllers tower some airspace (currently california) and it lets you practice things like getting flight following, IFR clearances, taxi instructions, etc. without burning $150/hr (cessna 172) (+$60/hr instruction) to practice radio work in your private pilot or instrument training.
Works with X-Plane and MS Flight Simulator X (though I'm sure when 2020 comes out it'll be supported).
Matchmaking killed that.
I don’t think game publishers realized they were essentially firing a free workforce that was making their online play great. I think private servers is one of the reasons Minecraft has such staying power.
https://www.x-plane.com
If you're looking for a more accurate, 'real' simulator it has a lot to offer. MS Flight Sim will be more than real enough for the vast majority of us but if you're interested in contributing to a product you can improve and have fun modelling/texturing additional planes, cities etc this is a project to get involved with.