TouchArcade and GameInformer note that acclaimed game developer Bungie has started work on a mobile game under the company Bungie Aerospace. The new company was started by Bungie and has filed a trademark for "Crimson" which is described as:
"Computer game software downloadable from a global computer network; Computer game software for use on mobile and cellular phones; Downloadable computer game software via a global computer network and wireless devices.
Gamespot points out that Bungie writer and designer Joseph Staten teased of the new project at GDC 2010: "Wouldn't it be great if we could make a world that was always there for you, with lots of stories to tell, like a big, infinite storytelling horizon? Man, that would be great."
Bungie was originally a Mac developer and responsible for first person shooter Marathon. Bungie, of course, was later acquired by Microsoft and launched Halo as an Xbox exclusive title. Bungie split from Microsoft in 2007 and is in a publishing contract with Activision. While no one has mentioned the iPhone or iOS specifically, given the size of the market, any mobile phone game in the works is likely to be targeted at Apple's platform.