An All-Inclusive Guide to Rummy APK 51 Rummy APK 51 is a mobile device-specific digital version of the traditional card game Rummy. This app gives users the convenience of spin slots freeplaying rummy on their smartphones or tablets while still enabling them to participate in the classic game. In addition to introducing special features and improvements that cater to the contemporary gaming experience, the game maintains the fundamental mechanics of Rummy, in which players attempt to form sets and sequences with their cards.