One of the odd design decisions when the fourth generation Apple TV was revealed two years ago was its requirement that any games running on it be entirely playable with the touch-enabled Siri Remote. Players will play as the Children of Light with the collevtive goal of bringing light to where it is needed the most.
If it's anything like TGC's past efforts, expect plenty of subtext and symbolism hidden beneath lush environments and high-flying characters.
Sky is described as a game where players will "hold hands with your loved ones as you fly together through a desolate sky kingdom, where generosity and compassion is key to lighting your path". It's been five years since, which makes it even more curious for the studio to choose Apple TV as a platform for its next big release, which isn't really known for gaming. People have been waiting 5 years for Thatgamecompany to announce their next game, and I don't think anybody would have expected that time to come during an Apple TV segment during an Apple event. In a tweet posted after Chen's appearance, thatgamecompany explained that Sky will launch first on Apple platforms, but didn't name any other platforms.