Hi!
I've made a patience/solitaire program for touch PocketBooks.
Currently it has
FreeCell and
Spider (1, 2, 4 suits) games. It should adapt to different screen sizes, so in theory it should work on any touch PB.
Downloads are on the
Releases page. The .app files are in the "Executables.zip" archive.
- The file containing "-assertions" is like a debug build. It does more checks and prints information to stdout.
- The .app without "-assertions" is the normal release version which you should use by default
The code is written not in C/C++ but in Eiffel. If you are interested, there is a separate thread about
programming in Eiffel for PocketBooks. Full source code is
on GitHub.
Testers needed 
Please report what works and what doesn't on your device.
Feature requests are accepted in this thread and on GitHub. Compatibility with Microsoft deal numbers is currently in the works. Preferably, bug reports should go to GitHub issues, but this thread is ok too.
Please note, running the program is at your own risk. In addition to the usual uncertainty of using the under-documented pocketbook SDK, an additional layer of uncertainty is included in the form of Eiffel and PB SDK integration.
Looking forward to hearing your feedback!