Big Time Mahjong is an awesome app with no in-app purchases.  It is free for everyone to enjoy! All you need to do is play any of our games and collect at least one ticket to be entered.  The more tickets you collect the more fun you are going to have.  Check back every couple days to see if your name is on the special ticket! It's very simple, every couple days we are sharing back a portion of our advertising revenue with one lucky player.  The larger our user base grows the more we will give