Mahjong Trails applies the formula currently popular for Facebook puzzle games to the old computer puzzle version of mahjong. The game contains several areas, each with a variety of different tile layouts. The rules of the game are the same as always, simply asking users to match all of the tiles before five minutes is up or before it becomes impossible to match more tiles. The game usually offers players one free reshuffle of the tiles, but it's not long before levels become very difficult to clear within the time limit. The real point of Mahjong Trails is to amass a higher score than all of your friends who play the game.