Kabam is expanding to Los Angeles. The mobile games giant has acquired L.A.-area rivals TapZen and Magic Pixel Games. The two firms will merge into a Kabam studio at TapZen's offices near Culver City, bringing the San Francisco company to Hollywood for the first time. In addition, TapZen founder Mike Verdue and about 40 employees will join Kabam. Terms of the deal were not disclosed. "Welcoming TapZen and Magic Pixel into the Kabam family is another significant milestone for Kabam," said co-founder…