Mahjong is a classic game mixing solitaire and matching pairs.  Gameplay is described as tiles with different images typically arranged into different layouts, with stacked layers adding difficulty to the problem of selecting pairs.  When searching for a quality Mahjong game to play, one of the key features to look for is a good number of unique layouts.  This is where PDArt steps in with Mahjong Mania Pro.  Version 1 boasted 400 unique layouts, with the recent update to version 2 adding another 276 layouts.  Doing the math that brings the total of unique layouts to 676.  This is enough, in my opinion, to keep a person occupied for quite some time.

You can download the demo version of Mahjong Mania Pro from the JAMM Store here, with the full version being available for $16.98.