Modern mobile games often take up gigabytes of free space, and developers resort to separating the installation file and additional data. Users who have downloaded an archive with resources separately often encounter a situation where, after installation, the application starts, but immediately crashes or requires downloading the data again, ignoring the already downloaded gigabytes. This is due to the fact that the Android system simply does not see the cache files in the desired directory unless they are moved manually. APK file and an archive with resources separately, we often encounter a situation where, after installation, the application starts, but immediately crashes or requires downloading data again, ignoring the already downloaded gigabytes. This happens because the Android system simply does not see the cache files in the desired directory unless they are moved manually.
The process of manually unpacking and moving files seems complicated only at first glance, but is a fundamental skill for any owner Android smartphonewho wants to play projects from torrents or third-party resources. You don't need to be a programmer or have root access to perform this procedure, all you need is attentiveness and an installed file manager. In this article we will analyze in detail the folder structure, the algorithm of actions and ways to solve typical errors that arise when working with OBB and Data archives.
Understanding how the operating system manages game files will help you avoid losing progress and save your phone traffic. We will consider not only standard placement paths, but also nuances associated with security restrictions in new versions of Android, where access to system folders is limited. The key point is that the name of the cache folder exactly matches the name of the game package, otherwise the application simply will not be able to find its resources.
What is the game cache and why unpack it
The game cache is a set of graphic textures, audio tracks, character models and other heavy resources that are necessary for the application to work, but are not included in the main one installation file. The division into APK (executable code) and cache (resources) allows you to reduce the size of the initial download to Google Play and makes it easier to update the main game code without having to download gigabytes of graphics again. When you download a game from a third-party site, you often receive these components separately, and your task is to assemble them into a single working system.
There are two main types of cache folders that are used in the Android system. The first is a folder /Android/obb/where archives with the extension .obbcontaining basic resources are placed. The second is the folder /Android/data/where user data, logs and additional files for a specific game are stored. Incorrect placement of files in these directories results in the game not being able to find the necessary elements and either throwing an error or starting a re-download.
Always check the file extension before moving: .obb files should be in the obb folder, and folders with package names should be in data.
It is important to understand that modern versions of Android, starting with the eleventh and especially in the twelfth and thirteenth versions, they significantly limited the access of third-party applications to system folders. This is done in order securityto prevent malware from gaining access to data from other applications. Therefore, for correct operation, you will need a specialized file manager that can request special permissions to access these protected memory areas.
Necessary tools for working with archives
To successfully unpack and move files, you will need a reliable archiver, since it is often impossible to open format files with standard system tools. .zip, .rar or .7z, in which the cache is packed. The leader in this area is the application ZArchiver, which is available for free in the Play Market and has full functionality for working with any archives. An alternative would be RAR or 7Zipper, but ZArchiver shows the best compatibility with the Android file system.
The second tool you need is an advanced file manager if you don't use the built-in one. Standard explorers from Xiaomi, Samsung or Huawei may hide system folders or not give permission to write to the directory /Android/. In such cases, it is recommended to use Files by Google or MT Manager, which correctly handle permission requests and allow you to see hidden files starting with a period.
Before you begin, make sure that the option to show hidden files is enabled on your device. In the settings of most explorers, this function is in the options menu or in the "View" section. Without this, you may simply not see the folder .android_obb or other system directories, which will lead to errors when searching for the desired path for unpacking.
Step-by-step guide for unpacking the cache
The process of installing a game with a separate cache requires sequential execution of actions, violation of which can lead to the application not working. First you need to install the APK file of the game itself, but do not launch it after installation. If you launch the game before moving the files, it may create empty folders or, conversely, download an incorrect version of the resources, which will cause a version conflict.
Next, find the downloaded archive with a cache in the device memory. Usually it has the extension .zip, .rar or .7z. Click on the file and select the "Extract" or "Extract here" option in your archiver. As a result, you should receive either one file with the extension .obb, or a folder with a name similar to com.name.game. It is this result that will need to be moved to the system directory.
☑️ Algorithm for installing a game with a cache
Now the most important step is moving files. You need to copy the unpacked file .obb to a folder /Android/obb/, creating a folder there with the name of the game package if it does not already exist. If you unpacked the data folder, it should be moved to /Android/data/. It is important not to confuse these two directories, since the game looks for resources strictly in certain paths and will not find them in an adjacent folder.
Folder structure and file paths
Understanding the Android file system hierarchy is critical for correct installation. All custom games and applications store their data in the root of the internal memory in the folder Android. Inside it there are two key subdirectories: obb and data. Confusion between them is the most common cause of "Cache files not found" errors.
The folder obb is intended for large binary objects, such as high-resolution textures and videos. The files here look like main.1234.com.game.obb. The folder data contains executable data, settings and cache of a specific application. The table below shows a comparison of paths for different types of content.
| File type | Extension | Position path | Name example |
|---|---|---|---|
| Main cache | .obb | /Android/obb// | main.1.com.gameloft.android.AMP.obb |
| Add. data | .obb | /Android/obb// | patch.1.com.gameloft.android.AMP.obb |
| Application data | Folder | /Android/data// | /Android/data/com.roblox.client/ |
| Universal cache | Miscellaneous | /Android/data//files/ | Folder files inside data |
Please note that the name of the folder in which you put the file .obbmust exactly match the game package name. For example, for the game Minecraft it will be com.mojang.minecraftpe. If you create a folder with a misspelled name or simply place the file in the root obb without a subfolder, the game will not launch. This requirement is strictly observed by the Unity and Unreal Engine engines.
⚠️ Attention: In Android 11 and later, direct access to the folder
/Android/data/through many file managers is closed. If your explorer writes "Path is not available" or shows an empty folder, use ZArchiver, which will ask for special permission through the Android system window the first time you access it.
Solving common installation problems
Even if you follow all the instructions, users may encounter problems when the game crashes or writes an error checksum. This is often due to the fact that the cache version does not match the version of the installed APK file. If you downloaded a game update (for example, version 1.5), and the cache remains from version 1.4, a version conflict is inevitable. In such cases, you need to look for a complete set of files released on the same day.
Another common problem is lack of space on the internal drive. Even if you have transferred applications to an SD card, the cache often requires placement in internal memory. The system may not see cache files if they are on an external card due to changes in Android security policy. It is recommended to free up internal space before installing heavy games.
What to do if the game requires downloading 2 GB of data after transferring the cache?
This means that the game did not find the cache files in the required path. Check the spelling of the folder name (case is important!), make sure that the .obb file is located inside the folder with the package name, and not just in the obb folder. Also check if your antivirus has blocked file writing.>
If you are using a device from Xiaomi or Huawei, you may have problems with battery optimization, which “kills” the installation or unpacking process. In this case, you need to add the file manager and the game itself to the list of power saving exceptions. It is also worth checking the permissions: the application must have rights to access the storage (Storage Permission).
Nuances of working on Android 12, 13 and 14
With the release of new versions of the operating system, Google is tightening the rules for accessing the file system. In Android 13 and 14, access to the folder /Android/obb/ and /Android/data/ for third-party applications is completely closed by default. This means that the standard "File Manager" may simply not show you the contents of these folders or not allow you to write anything there.
To bypass these restrictions, use the connection method via the MTP protocol or special functions of archivers. For example, in ZArchiver, when you try to enter the Android folder, a system window with a button will appear. “Allow access to the Android folder.” By clicking “OK” and selecting “Use this folder” at the bottom, you will give the application temporary but necessary access to perform the copy operation.
It is also worth considering that some smartphone manufacturers (for example, Samsung with the One UI shell) may hide the Android folder by default. To see it, you need to go to the file display settings and activate the “Show hidden system files” option. step, you will see only emptiness where critical data should be.
Is it possible to transfer the game cache to an SD card?
On modern versions of Android (10+), transferring the cache to an SD card for most games is impossible due to security restrictions. The system encrypts the path to the data, and the game simply will not find it on external media. games or devices with root access where you can make a symlink.
What to do if the archive is damaged during unpacking?
CRC error or “The archive is damaged” most often indicates problems with downloading. Try downloading the file again, preferably via a Wi-Fi connection, to avoid interruptions. Also make sure that there is enough disk space for temporary unpacking files.
Do you need to unpack the cache if the game is downloaded from Google Play?
No, when installing from the official Google Play store, all the necessary cache files are downloaded and unpacked automatically in the background. Manual intervention is required only when installing modified versions or games from third-party sources.