APK (Android Package File) and OBB (Opaque Binary Blob) files are commonly used to distribute Android games and applications. The APK file contains the game's code and resources, while the OBB file contains additional data required by the game.
Once the files are in place, go back to your home screen and open Zombie Infection. It should launch properly.
It would be irresponsible not to include a strong warning.
Extract the contents of the archive. Inside, you will find a folder named exactly like the game's internal package ID (typically starting with com.gameloft.android... ).
Because this game was designed for older devices, you may encounter black screens, graphic stretching, or immediate crashes on modern hardware running Android 11, 12, 13, or newer. If you run into issues, try these common workarounds: