The latest Bejeweled Blitz update will be available soon.
Set for release earlier this week, PopCap told Digital Spy that the high level of players has made a widespread release difficult.
"This is one of the biggest updates that PopCap has made since Bejeweled
Blitz launched last year," said a spokesperson.
"With well over three million users playing a total of more than 100 million Blitz games per day, it makes the introduction of major new features and functionality somewhat tricky.
"The game is currently live to approximately 50% of players - we continue to make some final tuning and hope to have the game back up to 100% availability shortly."