[Volundr]

> That's really tough. Marathon, by Bungie, is a good example of why this is tough - it's basically all the Destiny engine, network, and tooling code. When they shut down Destiny, it's not like they have a snapshot of their tooling. They've been continuously updating that tooling for ten years, and now they're using that investment for a new project.

I don't get why you think that makes it harder? Right up until the final version of the game their developers were somehow making changes and testing their changes. It's not like the game grew on its own. What were they using to test those changes? Release that. Job done.