Churchill Solitaire - The most diabolical version of solitaire ever devised. Played by Sir Winston himself. Available via the AppStore and Google.
Flow Free - Big Duck Games is an indie mobile game studio, focused on creating quality casual games, and especially puzzle games.
Microsoft Solitaire Collection - Play Klondike, Spider, Freecell, Pyramid, and TriPeaks! Plus, Daily Challenges!
Board Defenders - Puzzel games based on the chess rules
Treys - Like solitaire... but fun!
LeveLisa - The brain game that creates creativity