Ken Magic's successful "Solitaire" adapted to more recent ('Next Generation') devices.
Free as in "freedom". Open source, no ads.
Changes against the original include:
- "Deal" menu entry for devices with few hardware buttons
- Dynamic card size, self-adapting to larger screens
- Settings dialog modernized
Source code available under Apache license, see homepage.
For original code, go to http://code.google.com/p/solitaire-for-android