There was one platform, for better or worse, that Sonic hadn't made an appearance quite yet. He's been running along the mobile scene for some time, but not on the Apple TV. The first Sonic the Hedgehog is available right now through the TV OS app store, while the second installment is coming on March 24th.
And they aren't stopping there. If you wanted to use your micro-console as a true gaming machine, than you'll be able to play Sonic CD on the 31st of March. Strangely, all three of the games are live on the store, but only one can be purchased. That indicates that it's a complete and finished, uploaded app. There's no word from Sega on why we have to wait to enjoy all the classic adventures of Sonic. It could simply be a business decision. Regardless of why, the miniscule console is a pretty good fit for the blue blur.