Board Thread:General Discussion/@comment-35529267-20181027004124/@comment-35284508-20181027054412

MT forces a new ID for every new install. Their database is keyed to the ID. People who have 2 devices are not allowed by the user agreement to have the same game on both devices. But It can look that way and it maybe possible that they can use Facebook to ping pong between devices since FB can keep the game data but it does not keep friend links, but that is tricky (and also against agreements).