Zynga said today it has acquired Texas-based mobile game development company, Newtoy, makers of mobile games including Words With Friends and Chess With Friends.

The Newtoy headquarters in McKinney, Texas will become The Zynga With Friends Studio. Terms of the acquisition were not disclosed.

"The Games With Friends franchise is the best social game experience available on mobile today and we are excited to welcome the Newtoy team to the Zynga family," said Mark Pincus, founder and CEO of Zynga.

"The Zynga With Friends Studio will continue to invent great mobile social game experiences for Zynga users everywhere."

Newtoy CEO and co-founder Paul Bettner immediately assumes the role of VP and GM of The Zynga With Friends Studio, reporting to David Ko, senior vice president of mobile at Zynga. Bettner will lead the team to develop new mobile social games for the Zynga network.

Today’s announcement follows on the heels of the recent release of Zynga’s Mafia Wars and FishVille games onto the Yahoo platform. Zynga’s most popular game, FarmVille, recently launched on both the iPhone and the iPad and Zynga Poker will be the first Zynga game launched on Android.