Mahjong Ace is a free online mahjong games that uses up all the tiles in a set of 144 tiles. The tiles are arranged in a pyramid style, and there is a timer keeping the time you take to complete a set. This means that you will get a bonus score depending on the time you take to clear the layout. The game is initially set to the traditional mahjong tiles, but by clicking any of the sets at the top of tee game, you can change the look and use one which you are comfortable with, whether it is letters of the alphabet, or animals, etc. You are supposed to match the tiles and remove them from the game, but before you do you must find out if they are free. Free tiles are those that have at least one side free and can be easily moved to the left or right, were they arranged on a table. If you do get to a point when you cannot see any more tiles, then you can use the hint button, but be prepared for a penalty. Similarly if you do get completely stuck and there are no more moves, you should shuffle the tiles. This will not change their arrangements but it will change their faces so you can continue with the game. This is a very taxing game given that you are using a full set of tiles, so it must be played with utmost concentration. You can play the game without worrying about time so much as long as you are having fun, and enjoying the challenge. Free online mahjong games come in all sorts and shapes but those that use a full deck are something of a challenge to most players; join the ranks of the experts and get the tiles out of the layout.