Mastering Rummy: A Complete Guide Rummy is a well-known card game that has fascinated players for centuries all over the world. The fundamental idea of the game is to use a standard decknew version download of cards to form sets & sequences. Merging cards into legitimate combinations is the goal; these can be groups (three or four cards of the same rank) or runs (consecutive cards of the same suit). Rummy is accessible to players of all ages due to its straightforward rules, but even experienced players can remain interested due to the complexity of the strategy required.