What is a Wild Card?

Wild Card
A card that can substitute for any other card in the deck, typically used to complete melds, hands, or match any value.

Common Wild Cards

Card Wild In
Joker Rummy variants, Canasta, many games
Deuces (2s) Deuces Wild Poker, some Rummy variants
Eights Crazy Eights (match any suit)
One-Eyed Jacks Some Poker variants

Wild Cards in Rummy Games

In matching games like Rummy, wild cards help complete melds:

Example

You have: 5♥, 6♥, Joker. The Joker acts as 7♥, completing a run. Or use it as 5♦ to complete a set of 5s.

Wild Card Rules Vary

Wild Cards in Poker

Wild Cards in Shedding Games

In games like Crazy Eights and UNO, wild cards serve different purposes:

Strategy with Wild Cards

Etymology

The phrase "wild card" entered common English from card games. It now means any unpredictable element or person - like a "wild card" entry in a tournament.