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UNO·Card Games
UNO
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Skip: two per colour — the next player loses their turn; Reverse: two per colour — play changes direction; Draw Two: two per colour — the next player draws two cards and is skipped
Why people argue about this
People often assume that only one card of each action type (Skip, Reverse, Draw Two) can be played per color, thinking it's a limit on quantity for each action, but actually, they're allowed to play two cards of different colors with the same action, leading to arguments about which specific actions are being applied.
When you play your second-to-last card — leaving one card in hand — you must call "UNO". If another player catches you before the next player takes their turn, you draw two cards as a penalty.
Why people argue about this
People often think you must call "UNO" as soon as you have only one card left in your hand, forgetting that they need to do it after playing their second-to-last card, leaving just one for themselves. This leads to misunderstandings and arguments when another player calls out "UNO" before the next player's turn is up.
Many groups instead play a fixed number of hands, or simply treat each hand as its own game and skip scoring entirely — common enough that it is worth agreeing before the first deal.
Why people argue about this
People often assume that UNO hands must be scored individually like in other card games, leading them to argue about which cards are worth what points at the end of each hand. However, many groups actually play a fixed number of hands without scoring at all, treating each hand as its own mini-game, and this approach is so common it's agreed upon before starting the game.
Skip: the first player loses their turn.; Reverse: direction flips, so the dealer plays first.; Draw Two: the first player draws two and is skipped.
Why people argue about this
People often assume that if an Action Card is drawn first in UNO, they can simply play it immediately without skipping anyone, but actually, the turn order is dictated by the official rules: Skip for a "Skip" card and Reverse for a "Reverse," flipping direction accordingly; Draw Two cards are mandatory for any player who draws them, regardless of their position.
Draw one card from the draw pile.; If the drawn card can be played, you may play it immediately.; If it cannot, play passes to the next player.
Why people argue about this
People often assume that if they can't play a card from their hand due to needing to draw one, they should immediately draw cards until they find something playable. But actually, the rule states you only need to draw one card and then proceed as per your options—play it or pass it on if not applicable. This subtle difference in understanding leads to confusion.
One 0 in each colour (4 cards); Two each of 1–9 in each colour (72 cards)
Why people argue about this
People often assume that the two of each number card (1 through 9) only need to be in one color, leading to arguments about which colors should have those cards or how many cards are actually needed for all nine numbers across all four colors. The confusion arises because they overlook the requirement for exactly two of each numbered card in every single color.
When the draw pile is exhausted, set aside the top discard, shuffle the rest of the discard pile, and use it as the new draw pile.
Why people argue about this
People often assume that if the draw pile is empty, they can simply shuffle their discarded cards as a new draw pile without setting aside the top card first. But actually, the official rule requires setting aside the top discard before shuffling and using it as the new draw pile to maintain fairness in turn order.
A standard UNO deck contains 108 cards in four colours — red, yellow, green and blue — plus wild cards that belong to no colour.
Why people argue about this
People often assume that each colour in a UNO deck represents four different symbols (like hearts, diamonds, clubs, spades), which leads them to think there are 16 colours instead of just four primary ones: red, yellow, green, and blue. The confusion arises because they mix up the concept of color with the distinctiveness of each card's symbol set.
Each player is dealt seven cards.; The remaining cards form the draw pile, placed face down.; The top card of the draw pile is turned over to start the discard pile.
Why people argue about this
People often assume that each player gets dealt exactly seven cards, but they forget about the initial setup where one card is skipped from being distributed among players, leaving a total of 21 cards in play (7 per player plus the draw pile and discard pile). This oversight leads to misunderstandings about how many cards are actually dealt.
A Wild Draw Four may only be played when you hold no card matching the colour currently in play. You may hold matching numbers or symbols and still play it — the restriction is on colour alone.
Why people argue about this
People think you can only play a Wild Draw Four if your hand matches the color in play, which leads them to argue about whether they can still use it even if their numbers or symbols match but not the color. The confusion arises because the rule specifically restricts the color, not other aspects of matching cards.
Many groups instead play a fixed number of hands, or simply treat each hand as its own game and skip scoring entirely — common enough that it is worth agreeing before the first deal.
Why people argue about this
People often think that they can skip scoring entirely during each hand of UNO without agreement beforehand, which leads to arguments when players start playing differently within a single game session. The confusion arises because Section 5 specifically states it's worth agreeing on before the first deal whether you'll keep track of scores or not per hand.
UNO is unusually prone to house rules, and because there is no sanctioning body none of them are "wrong" — they simply are not the published rules.
Why people argue about this
People often assume that house rules in UNO are just suggestions rather than mandatory deviations from the official rules, leading to arguments about what truly constitutes a "variant." The confusion arises because UNO's lack of an authoritative sanctioning body means different groups can interpret and implement variants differently, even if they're all meant to be fun tweaks.
A Wild Draw Four may only be played when you hold no card matching the colour currently in play. You may hold matching numbers or symbols and still play it — the restriction is on colour alone.
Why people argue about this
People often assume that since a Wild Draw Four can be played with matching numbers or symbols regardless of color, they can use it whenever they have a number or symbol card in their hand. But the key part is misunderstood — the restriction is solely on the color not being matched by any other cards you hold, not just the number or symbol aspect.
Editions vary. Some retail decks add blank customisable cards, and themed editions substitute their own action cards; count the deck before assuming the distribution above.
Why people argue about this
People often assume that all UNO editions distribute 8 wild cards evenly among players, which leads to arguments when they discover some decks might have more or fewer than expected. The confusion arises because the official statement acknowledges that different retailers and themed editions can alter this number, leading to discrepancies in expectations versus reality.