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OBB Extension To GooglePlay

Hi Everyone,

We are trying to launch a game in Google Play Store. After a week, we can finally build our project for distribution as Apk. Because of the file size of the apk, we have a 75mb obb file as extension. First i upload the Apk to Google Play Store, than it asks me for an extension file. Than i'm uploading the obb file. So we launched our game this way, i can download the game, but the problem is, the game crash or start not working instantly. In our tests we can install the apk and obb successfully to our device with the .bat file given from android build. But if i upload apk and obb to GooglePlay store, it's instantly crashing. I tried to download and play the game in severel new android based devices.

Here is the Google Play link of the game.


The question is, should i have to make some settings that loads the obb ? Or should it be working by uploading the apk and obb directly to Google Play Store.

Thanks. ErgunTech

Product Version: Not Selected
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asked Sep 13 '14 at 02:10 PM in Packaging & Deployment

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31 2 4 6

avatar image ErgunTech Sep 16 '14 at 09:25 AM

Any ideas ?

avatar image JesseLord Oct 09 '14 at 09:02 PM

Confirmed! I am experiencing this same issue.

avatar image ErgunTech Oct 27 '14 at 04:08 PM

Does anyone have a solution about OBB download problem ? I'm really stuck at this, and tried everything i can.. Please give me a hand on this !

avatar image cahitburak Oct 27 '14 at 08:41 PM

This situation realy annoyed us. 1.5 month and no answer anywhere. As an indie developer this makes us to not use the engine for mobile and we lost at least two weeks. Is there any required thing to do similar to this http://www.exoa.fr/tutorial-unity-4-apk-splitting-google-play-obb/

avatar image JesseLord Oct 27 '14 at 09:10 PM

So I did some research on the issue, it appears that its related to how Google Play Store uploads their stuff. So the first time you upload your .APK it doesn't let you upload the OBB file with it.

The second time you upload the .APK file it lets you attach an OBB file but it won't let anyone download it to their phones. If you copy it over manually to the phone into the correct directory it works.

I haven't tried this yet but I'm guessing its the solution to this issue. The Third time you update your .APK file it lets you attach an OBB file and it actually lets people download it. (This is my guess I haven't actually tried it yet).

avatar image cahitburak Oct 27 '14 at 09:40 PM

There is no problem attaching obb. If you choose alpha or beta as your apk, there is an option as an expansion then you can upload obb too. Then move the apk to the production. But it looks like obb doesn't effect it. When you download it to your phone it only downloads apk not obb.

avatar image JesseLord Oct 28 '14 at 10:04 PM

According to the Downloading the Expansion Files section of this document --> http://developer.android.com/google/play/expansion-files.html

It says that it is common that your .obb file will not automatically download.

When your application starts, look for the expansion files on the shared storage location (in the Android/obb// directory). A) If they are there just continue loading the application. B) If they are not there then do these two things: Perform a request using Google Play's Application Licensing to get your app's expansion file names, sizes, and URLs. Use the URLs provided by Google Play to download the expansion files and save the expansion files. You must save the files to the shared storage location (Android/obb//) and use the exact file name >provided by Google Play's response.

Note: The URL that Google Play provides for your expansion files is unique for every download and each one expires shortly after it is given to your application.

avatar image JesseLord Oct 28 '14 at 10:15 PM


Well that explains that, its still missing from the support list. I wonder what the timeline is on getting that support added?

avatar image katherineyer666 Feb 04 '19 at 01:30 PM

I think I am also facing this issue. Did you get any proper solution? https://www.kodi.link/

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Hi all,

The option to download the obb from Google will come with the 4.8 release. For more information, please see the Android section in the Packaging Settings of the editor. In the meantime, please package your obb inside your apk for a guarantee that it will be available.


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answered Apr 16 '15 at 08:07 PM

avatar image Cultusfit Feb 03 '19 at 09:49 AM

I'm on version 4.21 And I dont see that option there. I have been looking for how to make this happen using BP now for awhile

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