Newsbrief: Angry Birds house Rovio Entertainment is set to open a new games studio in Swedish capital city Stockholm, as a means of further expanding its rapidly growing business. The company has previously opened offices in Tampere, Finland and Shanghai, China. With these new plans, it aims to make use of "one of Europe's gaming and innovation hotspots." The new Sweden-based office will open later this year with 20-30 employees. Rovio is currently looking to hire a general manager to get the move underway.