Hybrid and themed rummy sets. The "Mahjong Rummy" set is another noteworthy variety that blends aspects of classic Mahjong with rummy gameplay. The rules of melding & discarding are simi24 bet app downloadlar in this set, which usually consists of tiles rather than cards. There are also themed rummy sets that appeal to particular hobbies or tastes, like sets with historical themes or well-known figures from TV series and films. Collectibility and Cultural Importance. Because of these unusual sets' aesthetic value and nostalgic appeal, collectors frequently seek them out.