Zombie-X is an exciting standalone game for Android that uses the Xash3D FWGS engine. However, it's worth noting that the game data is not shipped with the app, and it needs to be downloaded from ModDB. Therefore, the game can only be played after following a few steps, which include downloading the game data and installing Xash3D FWGS. Once you have the game up and running, you'll find that it's an action-packed game that's sure to keep you on the edge of your seat.

The game features an exciting gameplay experience that's sure to keep you entertained for hours. It's a first-person shooter game that puts you in the middle of a zombie apocalypse. You'll need to fight your way through hordes of zombies and other creatures to survive. The game also features stunning graphics and sound effects that help to create an immersive experience. Overall, Zombie-X is an excellent game for anyone who loves action-packed gameplay and is looking for a new challenge on their Android device.