UPDATE: 24 hours later, the account which posted this information has since been made ‘private.’ Read into that what you like.
A long time ago, it was hinted that there would be some mobile games based on the Sonic Boom brand. Whilst there has been no further confirmation on their existence, this LinkedIn listing suggests that they do/did exist in some form.
According to a listing on LinkedIn, the Director of Live Operations at Sega Networks and Three Rings Studio (both of which are Sega mobile game development studios), states that he was a point of contact for a number of Sonic Boom projects including F2p Mobile Games.
As you can see in the screen grab above, this person was the mobile F2P contact point for Sega trans-media projects, such as Sonic Boom, listed in brackets are Cartoon Network, Nintendo, toys and merchandise and the yet announced F2P Mobile games.
Unfortunately, there’s no way to know if this means that the games are still in production or if this was a cancelled project since there has been no other word on mobile games related to Sonic Boom since Boom was first announced over a year ago.
We’ll update you if more details come to light.