You have installed ZMPP on your mobile device, now what, there is only one story that comes with it. True, that's why ZMPP allows two methods to play the majority of available Interactive Fiction in Z-Machine format:
The Interactive Fiction Archive is a publicly available internet service which hosts Interactive Fiction works by various authors. With ZMPP, you can search and download a large number of the works in Z-Machine format to your mobile device.
To do so, simply, select the "IF Archive" tab on the browser screen and enter the first characters of the author or story title and ZMPP will offer you a list of stories it knows. Select one of the stories from the list and it will be downloaded from the Archive.
For this method, you will need to connect your device with a USB cable and mount it as a removable device (please consult your device manual how to do this for your specific device and system).
When the system recognizes your device, you will be able to copy stories in the Z-Machine format to the folder zmpp/zstories
(on Linux/Mac OS X) or zmpp\zstories
(on Microsoft Windows) on this device. In order to be found, ZMPP needs to be restarted. The names of the transferred files need to be either in ZBLORB or plain Z-Machine format and either end in .z1, z2, z3, z4, z5, z7, z8 or zblorb.
Note: If your device does not have an SD card and not a media folder, ZMPP will store its data in its private storage which is the least optimal alternative because memory is limited and the only way to get games on your device is likely to use the download function.
When you click a link to a Z-machine story in the web browser, ZMPP offers to download the game to your personal library. If you click on a story file that is stored on your device and listed on your file browser, ZMPP will try to open it directly.