I made this challenging match 3 game before that genre got massively popular. And I even added a nice +1 mechanic to the game: Physics!
AS3: full game from art to code was made in flash AS3.
The game offered high replay-ability with many badges, achievements and other end-game content. Sadly I focused so much on programming that I completely forgot to add sounds and music and that costed me on ratings.
The game should be still alive at kongregate, but there might me some issues after the shutdown of mochimedia.