Employees work inside Groupon's headquarters at 600 W Chicago Ave., Feb. 15, 2011. (Brian Cassella/Chicago Tribune)

Chicago-based daily deal giant Groupon has acquired Pelago, the Seattle-based maker of Whrrl, a location-based mobile game for people to share recommendations on fun activities.

Financial terms of the deal, which was announced on Groupon and Pelago’s respective blogs on Monday, were not disclosed. Pelago Chief Executive Jeff Holden will oversee product development at Groupon, and many of the company’s employees will assume “integral roles in future Grouponnovations,” Groupon CEO Andrew Mason wrote in his blog post. Get the full story »