Seattle-based Z2Live, the developer of mobile and social games, announced today that it has acquired Big Sandwich Games, a game development studio based in Vancouver, BC. Financial terms of the buy were not disclosed. Z2Live said that Big Sandwich becomes the foundation of Z2Live Games Vancouver, which it says will allow it to source talent locally and abroad for its business. Z2Live said the acquisition follows the rapid growth of the firm from 16 to 80 employees in the last year. Z2Live is venture backed by Madrona Venture Group.