If I have an Xbox one and my friend has an Xbox series x are we able to play NBA 2k25 together?

Only if you both play the xbox one version

you almost certainly have an Xbox one S, if it has a disc drive you have a one. The letter is not the important part it's series or one with series being faster

The standard edition includes both versions, you need to download the Xbox one version

https://www.xbox.com/en-US/games/store/nba-2k25-for-xbox-one/9N9W42TW36FS/0010

Hello! I'm Annanda and I'd be happy to help you with your question.

Cross gen is when players can play, for example, on Xbox Series X/S with their friends on an older generation console, like Xbox One.

The issue here must be that your friend is playing the Xbox One version of the game and you are playing the Xbox Series X version, so you are not able to play together.

To play together, either you would need to download the Xbox One version of the game, or your friend would need to buy a Xbox Series X/S console, okay?

I hope I was able to answer your questions! Please, if you have any other doubts, we are here to help.

Give back to the Community. Help the next person who has this issue by indicating if this reply solved your problem. Click Yes or No below

Best Regards, Annanda.

Hi, my name is Fernando and I am an independent consultant for Microsoft products.

Cross-play is not supported between GTA 5 Enhanced Xbox Series X|S and Xbox One. So, Xbox Series X|S players using the enhanced version of the game won’t be able to play with those on Xbox One.

By the way , you can play GTA Online with people using systems in the same console family. If you have an Xbox Series X, but your friends own Xbox Ones, you can still jump into lobbies together.

Hello justinluftig,

Thanks for posting on the Xbox forums. We understand that you are interested in learning if you can play NBA 2K21 with your friend that plays on an Xbox One X while you play on the Xbox One S. Xbox One games can be played on the
original Xbox One, Xbox One S and Xbox one X. This means you will be able to play with you friend. We hope this information helps
justinluftig!