Players must also keep an eye on their opponents' movements because this can reveal important information about their tactics and possible hands. Rummycolour prediction app Bhai offers a number of variants to suit varying tastes and ability levels. A common variation is "Indian Rummy," which allows for more intricate gameplay & usually uses two decks of cards. One of the two sequences that players must create in Indian Rummy must be pure—that is, devoid of any jokers.