An ngmoco spokesperson tells us today that Facebook sports game developer Lionside was indeed recently acquired by the mobile publisher.

“We can confirm that ngmoco has acquired the Lionside team,” the spokesperson says. “The terms of the agreement are undisclosed. We are very excited to have Lionside join the ngmoco and DeNA family. They are working on new products for the Mobage social gaming platform, bringing their passion and experience to our continuously expanding first party development capabilities.”

Ngmoco was itself acquired late last year by Japanese developer and platform provider DeNA for up to $403 million. We first started seeing the results of the relationship this summer with the launch of DeNA’s Mobage platform for English-language markets via the Android Marketplace. DeNA is expecting overseeas sales to hit 1 billion yen ($13.1 million) with a net loss of 1.1 billion yen ($14.4 million) for the quarter ending this month. The company ended its last quarter with 50.9 billion yen ($665 million) in cash on its balance sheet.