The number 22 immediately following main. refers to the version code of the application. In Android development, every release increments this integer. Version 22 suggests maturity; this likely corresponds to a specific build of Half-Life 2 for the NVIDIA Shield series of devices. This number is critical for the Android Package Kit (APK) installer: it verifies that the OBB file matches the installed application. If the APK is version 23 but the OBB is version 22, the game will refuse to run, preventing corrupted data or mismatched assets.

The correct package name for Half-Life 2 on NVIDIA Shield is: com.nvidia.valvesoftware.halflife2 main.22.com.nvidia.valvesoftware.halflife2.obb

Decoding the Anomaly: What is "main.22.com.nvidia.valvesoftware.halflife2.obb"?

If you are searching for this specific file string, you are likely staring at an error message on your NVIDIA Shield TV, Shield Tablet, or an Android TV box. You have just installed Half-Life 2, and instead of launching the game, you see a dialog box stating: "Please download the OBB file: main.22.com.nvidia.valvesoftware.halflife2.obb".

I can help with alternatives—pick one: Half-Life 2 on Android: The Magic of OBB

🗑️ Can you delete it?

• If you no longer play Half-Life 2 – yes, it is safe to delete. It’s not a system file. You will free up several GBs of storage.
• If you still play the game – no, deleting it will break the game completely.

The file main.22.com.nvidia.valvesoftware.halflife2.obb is a core data asset for the NVIDIA Shield Android port of Half-Life 2