Check out Reentry on steam, it has native VR support. Al tough not as detailed or advanced as NASSP, it has a some pretty detailed Apollo missions. I thought it was a cool VR experience but Orbiter remains king.
KSP2 early access is a train wreck.. I've been playing for the last couple of hours and it simply wasn't ready for early access yet. The performance is horrible even though I have a beefy pc with a Ryzen 9 5900x and an RTX 3070. The game lags and stutters like crazy and the graphics are less...
I just came across this while browsing on steam, looks very promising!
A realistic simulation game where you design your own rocket engines.
This might become a useful tool for orbiter addon developers?
For the enthusiasts the KSP developers also claim there will be an export function for KSP 2.