The aim of Mulle is to win cards that are laid face up on the table, by matching them with cards in one's hand with the corresponding numerical values. Two shuffled packs of cards are used. As in Casino, points are awarded for, among other things, certain counting cards; in addition, you get points for each mulle, that is, for a card taken using a card of the same denomination and suit.
- Glimne, Dan (2016). Kortspelshandboken (3rd revised and expanded ed.). Stockholm: Känguru. pp. 86–88, 187–189, 237–239. ISBN 978-91-7663-115-7.
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