Found a pretty cool sim in the works that has collision detection,multiplayer,Newtonian physics, that you can build ships fly them and walk around inside of them (IVA) you can find more info here: https://galaxy4d.com/portal.php
Hi,
Galaxy4D has real newtonian physics + General Relativity without time dilation.
There will be no pre-made vehicles, only a few machines to build parts that players can use to build any kind of vehicle or station.
Players have to build their own spacecrafts with their own techlonogy,
which means that if you want to build the SpaceX's BFR or the Saturn 5 with all its stages and the lander, you absolutely can !
A big team of people would be able to work together to build something huge, like the death star.
You can walk around inside the ships you build in first person, just like you would in real life.
The construction system is not a design tool, rather it is an immersive first person experience where you grab a part, put it somewhere and weld it.
It means that you will walk around and inside your spacecraft while you build it, and for maintenance while your friend flies it.
You also have to pass all the wires for your electrical system which you will design yourself.
You can install on-board computers that are programmable via code (using our proprietary language which you can start learning now here).
Modding will be supported after the Alpha version (could be Beta or Final) for Solo and Multiplayer mode, but not for the official MMO servers.
Modding will be done via C# code.
Hope this answers all your questions Smile
You can check the FAQ forum for more answers, or just ask.
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ZOlivier,
Main developer and Founder of Galaxy4D