Zynga Said to Pay More Than $20 Million to Gain A Bit Lucky

Zynga Inc., the largest maker of games played on Facebook Inc.’s social network, has agreed to acquire San Mateo, California-based game maker A Bit Lucky Inc., adding titles to attract more serious players.

Zynga paid $20 million to $25 million for the startup, according to two people with knowledge of the deal, who asked not to be named because terms weren’t disclosed. A Bit Lucky’s more than 20 employees will join Zynga, the San Francisco-based company said yesterday in a blog post.