Mobile and Facebook game maker Zynga is planning to close its subsidiary OMGPOP's online game portal starting August 29, when four of its web games will be shut off, with the site going entirely dark a month later on September 30. Mobile apps made by the company will not be affected, meaning players of Draw Something, Draw Something 2 and Draw My Thing will continue to be able to play on mobile devices. The four games first affected will be Cupcake Corner, Gem Rush, Pool World Champ and Snoops.