You can download a free "Run'n'gun" game for your iPhone, iPad or iPod Touch from the AppStore by clicking on this link:
https://itunes.apple.com/en/app/runngun/id570153824
If you have any issues with the game or if you have any questions about it, please create a support ticket using the following link:
https://support.gaijin.net/hc/en-us/requests/new