I'm a bit confused with this game share bis as I haven't had an xbox since the 360, but I have recently used the app on my pc. I just wondered if I can buy the game and play on pc while giving my brother the xbox version. He says it's all on one account, but I've read you can game share across multiple accounts?

Does anyone know any more about this?

It will be locked to a single Microsoft account. It's basically a single copy of the game available on two different platforms.

Ok thanks for clearing that up

But if the account the game is bought with is the primary account attached to the Xbox, then other accounts on the Xbox could play it right? I've never had a need to test any of this stuff, but I thought that's how it worked. Any other sub accounts on the same Xbox could access the games of the primary account if the primary account allows.