largedeck

Largedeck is a term used informally to refer to a deck size that exceeds the standard for a given card game. It does not denote a formally defined format and its exact card count and rules vary between games and communities.

In most card games with fixed deck sizes, increasing the deck size alters probability distributions, mulligan strategies, and the frequency of key cards. A larger deck typically lowers the chance of drawing specific cards in the opening turns and can lengthen games, while some players use search or tutor effects to compensate. Variants at the larger end of the spectrum often appear in casual play or house rules rather than official formats, and may include adjustments to hand size, draw limits, or deck-thinning mechanisms to maintain balance.

In other domains, largedeck may appear as a brand name, a dataset label, or a project identifier, but there is no widely recognized standard meaning beyond its descriptive use in games. When encountered, the exact definition should be inferred from context or supported by cited rules.

See also: deck size, mulligan, deck-building games.