How do Android game updates works?

Hi, i’ve never published nothing on Play Store yet, so i want to be sure how it works.
If i publish a game on PlayStore, and after some time i want to add leves…
Players will have to download the update apk with all the full game again?
Would be possible they only download a “patch” with the new data on the apk?
I’m little worried about how can manage the future updates if my game have players.

Thanks!

It does the full APK again. This is nothing that you have control over (the Play Store handles all of that), except for making the APK (or ABB as they are now) as small as you can. Or splitting the game into the APK for the code and essential assets, and an OBB for the bulk of the assets. But then you have to add code to handle the downloading and versioning of the OBB. And that is just a real pain in the butt. Not something I would recommend for a first published game.

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So, even if it’s a 100 mb game, the best option is a full download again, if i underestand correctly.

Thank you!!