Given the question: Facts: - residence: san francisco - known for: co-founder , zynga - caption: '' justin waldron speaking in helsinki , finland '' - birth date: 18 june 1988 - name: justin waldron - image size: 200px - nationality: united states - image: justin_waldron_arctic15 . png - birth place: watertown , connecticut - occupation: entrepreneur , investor Based on these bullet points, write a short biography describing the life of justin waldron .
The answer is:
justin waldron -lrb- june 18 , 1988 -rrb- is an american internet entrepreneur best known as the co-founder of zynga , which makes online social and mobile games .zynga is considered to be the pioneer of the social gaming industry , which is expected to reach $ 5.5 billion by 2015 .within four years of its founding , zynga had grown to a $ 1 billion company and in 2011 held the largest ipo since google .waldron left zynga in october 2013 and is currently an active angel investor and advisor in various other technology companies .zynga 's top games include : cityville , farmville , the pioneer trail , zynga poker , mafia wars , empires & allies , and adventure world .