- Take your family game night to high-octane new heights with the official UNO Add-On Packs: Stack Pack by Mattel!
- Designed to seamlessly mix into any standard classic UNO deck, this 16-card expansion pack introduces official stacking mechanics that make draw penalties bigger, faster, and far more chaotic.
- Featuring Stack 1, Stack 2, Wild Stack 3, and unpredictable Wild Stack Number cards, players can match card colours or stack penalties onto existing Draw 2 or Wild Draw 4 cards to pass the entire accumulated card total onto the next unsuspecting player.
- Complete with colourblind-friendly graphic symbols and subtle background icons for easy deck sorting, the Stack Pack turns simple turn-taking into a fast-paced battle of tactical defense and game-changing reversals.
16 Expansion Cards: Adds 16 official specialty cards to any classic UNO deck for immediate, action-packed stacking gameplay (requires standard UNO deck to play).
Official Stacking Rules: Allows players to chain Stack 1, Stack 2, and Wild Stack cards onto draw penalties (+2 and +4) to pass massive card tallies to opponents.
Wild Stack Number Card: Forces the next player to draw a random amount of cards by flipping top cards from the draw pile until a number card is revealed.
Colourblind-Accessible Graphic Symbols: Features special graphic identifiers on every card so players with any form of color vision deficiency can easily play.
Easy Sorting & Customization: Includes subtle set symbols on card backgrounds so expansion cards can be added or separated quickly between rounds.

