Main.22.com.nvidia.valvesoftware.halflife2.obb May 2026

NVIDIA has a close relationship with Valve. Several Valve titles, including Half-Life 2, Portal, and Left 4 Dead 2, were ported to NVIDIA Shield using Android and the Tegra chipset. On Shield devices, the package name often remains com.valvesoftware.halflife2, but the OBB file resides under:

/sdcard/Android/obb/com.valvesoftware.halflife2/main.22.com.valvesoftware.halflife2.obb

However, no standard Shield installation inserts an extra “nvidia” domain into the filename. What you may be seeing is:

If you found this file on a non-Shield device, it is almost certainly an unofficial port. main.22.com.nvidia.valvesoftware.halflife2.obb

main.22.com.nvidia.valvesoftware.halflife2.obb is an anomaly – a filename that blends Android OBB conventions, NVIDIA’s hardware branding, and Valve’s package name in a way no official release does. Most likely, it is: NVIDIA has a close relationship with Valve

If you legally own Half-Life 2 on NVIDIA Shield, your original OBB file will have a clean name: main.22.com.valvesoftware.halflife2.obb. Anything else should be treated with caution.

Before running or renaming such a file, verify its integrity with a hash from a trusted source – or better yet, uninstall unofficial versions and enjoy Half-Life 2 through official channels like Steam (PC) or the NVIDIA Shield store. However, no standard Shield installation inserts an extra

Need help identifying a suspicious file? Run it through VirusTotal and check its digital signature. Never execute unknown .obb files, as they may contain executable code disguised as game data.

It seems you've come across a file named "main.22.com.nvidia.valvesoftware.halflife2.obb". This type of file is typically associated with Obb (Opaque Binary Blob) files used in Android games for storing game data. However, I'll provide a general guide on what this file could be related to and how to handle it.

It may be a remnant from an Android emulator. Delete it unless you recognize the source.