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http://mahjongtime.blogspot.com/2011/01/guild-play-improvements-coming-soon.html
    It has been more than one year and a half since we introduced Mahjong Time Guilds. The guild play has became pretty popular, but unfortunately, we have not been able to improve  the
    team play much since then. Now, we have collected enough feedback to get ready to improve a few aspects of the guild play, and before we go into the development we would like to
    share our thoughts with you:
  
     
  
  
  
    Guild Score Design(Guilds tab) 
  
  
    One of the major changes that we are going to implement with this update is how the guild score will be calculated. 
  
  
  
    The score which will be taken into account to announce the wining guild is going to be the Total Score. The Total Score will take into account your Game
    Score(the points earn in a particular game) and the Dragon Chips bet at that table.  
  
  
  
    This is how the Total Score will be calculated:
  
  
    For HK, MCR, AM, EC, TW:
  
  
    Dragon Chip Winnings*Game Score/100,000
  
  
    For RCR:
  
  
    Dragon Chip Winnings*Game Score/10,000,000 
  
  
    Note: The Dragon Chips you win will be raked and then the Total Score will be calculated.
  
  
    VIP - 0% Rake
  
  
    Premium - 5% Rake
  
  
    Free - 15 % Rake
  
  
  
    Example:
  
  
    HK:
  
  
    VIP Member
  
  
    Dragon Chip Winnings = 400 DC - 0(0% Rake)
  
  
    Game Score = 124
  
  
    Total Score = Dragon Chip Winnings * Game Score/100,000;  400*124/ 100,000 = 0.496 ------------
  
  
    Premium Member
  
  
    Dragon Chip Winnings = 400 DC - 20(5% Rake)
  
  
    Game Score = 124
  
  
    Total Score = Dragon Chip Winnings * Game Score/100,000; 380*124/ 100,000 = 0.471 ------------
  
  
    Free Player
  
  
    Dragon Chip Winning = 340 DC -60(15% Rake)
  
  
    Game Score = 124
  
  
    Total Score = Dragon Chip Winnings * Game Score/100,000; 340*124/ 100,000 = 0.421 ------------
  
  
  
    And this is how the Guild info window will look like:
  
  
  
     
  
  
    Guild Chat In the Guild Info window we are going to place a “Chat History” visible only to members of this guild. The Guild Chat itself will be located on the right bottom
    corner where the Public Chat and Game Chat are.
  
  
     
  
  
  
    Prizes
  
  
    The Guild Prize is going to be calculated against the Total Prize Pool of 500,000 Dragon Chips, and it will  depend on the number of
    active guilds in the entire competition:
  
  
  
    The Guild will be considered active if they achieve at least 25% of the average of the total score of guild winners for the last 4 weeks period.. 
  
  
    Example:
  
  
    HK
  
  
    First Week - 47,920 (Total Score)
  
  
    Second Week - 45,684 (Total Score)
  
  
    Third Week - 42,024 (Total Score)
  
  
    Fourth Week - 46,228 (Total Score)
  
  
    ------------------------------------
  
  
    Average Total Score = 45,464 
  
  
    25% of the average = 11,366
  
  
    A HK Guild becomes active when its score becomes equal or greater than: 11,366
  
  
    Based on the data from Dec. 24th, 2010 we have two active HK Guilds
  
  
  
    MCR
  
  
    First Week - 22,815
  
  
    Second Week - 16,271
  
  
    Third Week - 17,847
  
  
    Fourth Week - 19,131 ------------------------------------
  
  
    Average score  = 19,016
  
  
    25% of the average = 4,754
  
  
    Based on the data from Dec. 24th,  2010 we have six active MCR Guilds
  
  
  
    AM
  
  
    First Week - 24,610
  
  
    Second Week - 21,340
  
  
    Third Week - 17,620
  
  
    Fourth Week- 20,180 ------------------------------------
  
  
    Average score = 20,937.5
  
  
    25% of the average  = 5,234.3
  
  
    Based on the data from Dec. 24th, 2010 we have six active AM Guilds
  
  
  
    RCR
  
  
    First Week - 4,677,731
  
  
    Second Week- 5,006,096
  
  
    Third Week - 5,540,378
  
  
    Fourth Week - 12,679,469 ------------------------------------
  
  
    Average score = 6,975,918.5
  
  
    25% of the average  = 1,743,979.5
  
  
    Based on the data from Dec. 24th, 2010we have two active RCR Guilds
  
  
  
    EC
  
  
    First Week - 130,430
  
  
    Second Week - 74,028
  
  
    Third Week - 96,822
  
  
    Fourth Week - 125,896 ------------------------------------
  
  
    Average score = 106,794
  
  
    25% of the average  = 26,698.5
  
  
    Based on the data from Dec. 24th, 2010 we have three active EC Guilds
  
  
  
    TW
  
  
    First Week - 22,974
  
  
    Second Week - 19,921
  
  
    Third Week - 17,597
  
  
    Fourth Week - 15,813 ------------------------------------
  
  
    Average score = 19,076.25
  
  
    25% of the average = 4,769.1
  
  
    Based on the data from Dec. 24th, 2010 we have two active TW Guilds
  
  
  
    We have a total of 21 active guilds which is 100%
  
  
    The Prize Pool of 500,000 DC will be distributed as follows:
  
  
    21 active guilds - 100% of the Prize Pool
  
  
    As we had 2 active HK guilds, the winning HK Guild  will receive 9.52% of the prize pool. 
  
  
  
    And the entire distribution of the prize pool among Guilds would be:
  
  
    Winning HK Guild- 9.52% - 3,966 DC per member  (9.52% of 500000 DC = 47600 DC )
  
  
    Winning  MCR Guild- 28.57%   - 11904 DC per member (28.57% of 500000 = 142850 DC)
  
  
    Winning AM Guild - 28.57% - 11904 DC per member (28.57% of 500000 = 142850 DC)
  
  
    Winning  RCR Guild–  9.52% - 3966 DC per member (9.52% of 500000 DC = 47600 DC)
  
  
    Winning EC Guild- 14.28% - 5950 DC per member (14.28% of 500000 = 71400 DC)
  
  
    Winning  TW Guild- 9.52% - 3966 DC per member (9.52% of 500000 DC = 47600 DC)
  
  
     
  
  
  
    Guild Prize = Number of active Guilds in the specific style * 100 / Total Number of active Guilds
  
  
    Prize for the each Member of the winning Guild = Prize of the Guild / Number of Members
  
  
  
  
    The automatic distribution of the prizes will be made as follows:
  
  
    Winning guild members  -  Dragon Chips + Medal on player's avatar
  
  
    The most active member of the winning guild -  Dragon Chips + 300 Golden Coins + Medal + Guild Leadrship
  
  
    Non-active member of the winning guild - 0 and no medal