We mentioned above our plans for s&box - including the ability to export your game as its own executable.
We've been working hard on this. We have it at a point where you can export a game as its own executable, with its own steam app ID, with functional multiplayer, and without a s&box requirement on the user's end.
Standalone games support everything you'd expect, including VR, local storage, and can have their whitelists disabled.
The trade-off here is that standalone games have no access to the platform - which means you can't use our backend to load assets at runtime, or post scores to the backend leaderboard, etc.
This is a super basic feature set and we'll obviously expand on this as time goes on.