Where can I buy source codes for games or applications?

Question

Mobile development

Just apk is not interested. We need directly the source code in which I could fix it myself or add an addendum

Answer 1

https://codecanyon.net/category/mobile/android

Answer 2

If the sources are proprietary, you can only try to buy them from the author-owner. But not the fact that the owner will agree.
If the sources are open-source, they are already available somewhere on the Internet, for example github, sourceforge, personally on the project portal, in general, in different ways.

Answer 3

GitHub

Answer 4

maybe it's easier to send your proposals right away, etc. to the author or agree with him directly on joint work on the code

Answer 5

Free and open source Android apps
https://fossdroid.com/

Answer 6

I have written 79 games for android. You can find it here: https://www.company-did.com/progr/cards.php
Ready to sell the source code.