Zynga revealed that Treasure Isle and FishVille will be officially closed December 5. These games will be the first of 13 that Zynga will eliminate in the months to come.

FishVille has 730,000 MAUs and 70,000 DAUs, though at the game’s peak it had 7.45 million DAUs. Treasure Isle has 540,000 MAUs and 80,000 DAUs.

These closings are part of a major restructuring announced by Zynga that will close their studio in Boston, reduce its workforce in Austin and severely curtail its studios in the U.K. and Japan.