Sea of Thieves is Microsoft's fastest selling first party new IP of this generation.

[VGPolyglot]

JRPGfan said:

VGPolyglot said:
Microsoft's
fastest selling
first party
new IP
of this generation

How many other First Party, new IP have they had so far?
When they say this, what other games from them has it beat in performance?

Hmm, I think someone could come up with a list, but then again the titles that I'm thinking of I assume aren't considered first-party like Ori and Sunset Overdrive.