In the past, when the GOT: Winter is Coming was just about to release, there were many rumors that it will also be arriving on Android and iOS devices. But all such rumors were crushed when the launch happened, it was just available on PC.
But recently, the game was spotted taking Pre-Registration on Google Playstore in certain regions. In addition to this, a new mobile trailer of the game has also been shared, which you can have a look at below.
Source: N4G PC Pc Game 'GOT: Winter is Coming' Is Making its Way to Mobile