The games will go offline on June 14, 2013.
From the official announcement:
Today we are informing players of the difficult decision to retire some of our Facebook games: The Sims Social, SimCity Social and Pet Society.
After millions of people initially logged in to play these games, the number of players and amount of activity has fallen off. For people who have seen other recent shutdowns of social games, perhaps this is not surprising.
EA will continue to deliver popular titles for Facebook, most notably games from PopCap, including Bejeweled Blitz, Solitaire Blitz and the recently-announced Plants vs. Zombies Adventures.
Top image credit: Joe Klamar for AFP / Getty Images