Square Enix released the COSMOS RINGS today on July 28, 2016. This title is an exclusive Apple Watch only game what you can buy from the AppStore in all regions, not just in Japan. The game costs 1080 Yen / 12 USD but until August 31, 2016 you can buy it with a special discount for 720 Yen / 5.99 USD!
This game is a special RPG game using the Watch’s built in features such as the step count to clear the missions and upgrade your character. You can operate the game with only one top on the little screen of the watch and according the Square Enix it is still very comfortable to play with it.
The game is only an Apple Watch game. Android Wear or normal iOS / Android version release not announced.