Yes it is specifically the part of their stack that one distributes to customers. It's like if the Java runtime or the DirectX runtime wasn't distributable to c

Yes it is specifically the part of their stack that one distributes to customers. It's like if the Java runtime or the DirectX runtime wasn't distributable to cloud machines. Unity had a pretty clear model as providing a software stack that one pays for using, primarily containing a bunch of proprietary tools for creating applications for their runtime. And then one could package that runtime and their application and give it to whoever one wanted (as long as they followed the revenue share part of the contract). So yes it's part of the stack. but it's the part of the stack that people are meant to redistribute with their game.