Is Fallout Shelter Mod often virused or frozen?

These errors are usually caused by poor quality game houses. Choosing to download the game at the Xapkfree link will not make your computer attacked by viruses, the game will also be smoother.

Can Fallout Shelter Mod be played offline?

As long as you have downloaded the game to your device, whether you are offline or online, you can still manage the cellar.

Is this game capacity high?

Game capacity is limited to between 3-400 megabytes. The game is allowed to be played on both Android and IOS operating systems but still encourages operating systems in the next generation (Android, Snapdragon 835 chip and IOS 11.0 or higher) so that the game can run smoother.