Application: Solitaire Mahjong
License: GPL 2+
Description: Solitaire Mahjong (...) is a solitaire (one player) version of the classic Eastern tile game, Mahjong. It has all the functionality you expect from a tile or card game. (from website)
The base app is rather old and has not been updated since 2008. But it works well on my XP machnine. Testing on Vista/Win7 is needed to see if it runs on any newer OS.
Download Soliraire Mahjong Portable 1.3.1 Development Test 1 [6.9MB download / 8.6MB installed]
1.3.1 Development Test 1 (2012-01-28):
Makes use of PA.c Launcher, PA.c Installer ans PA.c AppCompactor