Nintendo just announced that Super Mario Run for Android, Super Mario Run is game which has been out on iOS devices for over a month.
It will be out on Android on March.
I am aware of the difficulties of developing for Android vs iOS, what with all the different specs and screen sizes, Nintendo wants to release a bug free game that’s why it is taking time to release the android version of the game.
I am also aware that Apple was very interested in promoting the game exclusively over the holiday period, with demos in Apple stores, etc.
Any Android users wanting to be kept informed of the actual release, you can register for updates on the game’s Google Play Store listing.