There are two different kinds of Chinese decks used for rummy like games. The rules of each variation vary greatly. Khanhoo Cards : (52) Varies on game type. Play the classic card game Rummy online for free. No download required. Can you beat the computer?. Rules and variants of the card game rummy. This page describes the basic game where players draw one card each turn and discard one, and Types of Rummy · Basic Rummy · Optional House Rules.