Sega confirms that several new Sonic the Hedgehog mobile titles are in development after its acquisition of Angry Birds developer Rovio. Earlier this year, the Finnish game developer announced it was open to being sold to another company, with Sega being among one of its potential buyers. After a few months, with the earliest talks around April, Sega finalized its acquisition of the Angry Birds developer in August, with the studio fully coming under Sega's umbrella in September.