The identifier main.22.com.nvidia.valvesoftware.halflife2.obb refers to the primary OBB (Opaque Binary Blob) data file for the Android version of Half-Life 2 , originally developed specifically for the NVIDIA Shield
Knowing this can help determine if a patch is the right solution or if another workaround is better. Unforeseen Consequences: A Half-Life Documentary main22comnvidiavalvesoftwarehalflife2obb patched
Use a tool like md5sum to compare the original and patched .obb files. If the patched file is drastically different in size or hash from a known legitimate patch, do not use it. The identifier main