UNO

 (translated as "one" in Italian and Spanish) is an American shedding-type card game which was the flagship brand of International Games, Inc. which was purchased by Mattel on January 23, 1992. The game is played with a specially printed deck and its general principles put it into the crazy eights family of card games. It is similar to the traditional European game mau-mau.

History
The game was originally developed in 1971 by Merle Robbins in Reading, Ohio, a suburb of Cincinnati. When his family and friends began to play more and more, he spent $8,000 to have 5,000 copies of the game made. He sold it from his barbershop at first, and local businesses began to sell it as well. Robbins later sold the rights to Uno to a group of friends headed by Robert Tezak, a funeral parlor owner in Joliet, Illinois, for $50,000 plus royalties of 10 cents per game. Tezak formed International Games, Inc., to market Uno, with offices behind his funeral parlor. The games were produced by Lewis Saltzman of Saltzman Printers in Maywood, Illinois.

In 1992, International Games became part of the Mattel family of companies.

Official rules


The aim of the game is to be the first player to score 500 points, achieved (usually over several rounds of play) by being the first to play all of one's own cards and scoring points for the cards still held by the other players.

The deck consists of 108 cards: four each of "Wild" and "Wild Draw Four", and 25 each of four colors (red, yellow, green, blue). Each color consists of one zero, two each of 1 through 9, and two each of "Skip", "Draw Two", and "Reverse". These last three types are known as "action cards".

To start a hand, seven cards are dealt to each player, and the top card of the remaining deck is flipped over and set aside to begin the discard pile. The player to the dealer's left plays first unless the first card on the discard pile is an action or Wild card (see below). On a player's turn, they must do one of the following:
 * play one card matching the discard in color, number, or symbol
 * play a Wild card, or a playable Wild Draw Four card (see restriction below)
 * draw the top card from the deck, then play it if possible

Cards are played by laying them face-up on top of the discard pile. Play initially proceeds clockwise around the table.

Action or Wild cards have the following effects:


 * A player who draws from the deck must either play or keep that card and may play no other card from their hand on that turn.
 * A player may play a Wild card at any time, even if that player has other playable cards.
 * A player may play a Wild Draw Four card only if that player has no cards matching the current color. The player may have cards of a different color matching the current number or symbol or a Wild card and still play the Wild Draw Four card. A player who plays a Wild Draw Four may be challenged by the next player in sequence (see Penalties) to prove that their hand meets this condition.
 * If the entire deck is used during play, the top discard is set aside and the rest of the pile is shuffled to create a new deck. Play then proceeds normally.
 * It is illegal to trade cards of any sort with another player.

A player who plays their next-to-last-card must call "uno" as a warning to the other players.

The first player to get rid of their last card ("going out") wins the hand and scores points for the cards held by the other players. Number cards count their face value, all action cards count 20, and Wild and Wild Draw Four cards count 50. If a Draw Two or Wild Draw Four card is played to go out, the next player in the sequence must draw the appropriate number of cards before the score is tallied.

The first player to score 500 points wins the game.

Penalties

 * If a player does not call "uno" after laying down their next-to-last card and is caught before the next player in sequence takes a turn (i.e., plays a card from their hand, draws from the deck, or touches the discard pile), they must draw two cards as a penalty. If the player is not caught in time (subject to interpretation) or remembers to call "uno" before being caught, they suffer no penalty.
 * If a player plays a Wild Draw Four card, the following player can challenge its use. The player who used the Wild Draw Four must privately show their hand to the challenging player, in order to demonstrate that they had no matching colored cards. If the challenge is correct, then the challenged player draws four cards instead. If the challenge is wrong, then the challenger must draw six cards; the four cards they were already required to draw plus two more cards.

Two-player game
In a two-player game, the Reverse card acts like a Skip card; when played, the other player misses a turn.

House rules
The following official house rules are suggested in the Uno rulebook, to alter the game:
 * Progressive or Stacking Uno: If a draw card is played, and the following player has the same card, they can play that card and "stack" the penalty, which adds to the current penalty and passes it to the following player. (Although a +4 cannot be stacked on a +2, or vice versa.) This house rule is so commonly used that there was widespread Twitter surprise in 2019 when Mattel stated that stacking was not part of the standard rules of Uno.
 * Seven-O: Every time a "7" is played, the player who played the "7" card must trade their hand with another player of their choice. Every time a "0" is played, all players pass their hands to the next player in the current direction of play.
 * Jump-In: If a player has exactly the same card (both number and color) as the top card of the discard pile, they may play it immediately, even if it is not their turn. The game then continues as if that player had just taken their turn.

Card and deck styles


Modern Uno action cards bear symbols which denote their action, except for the Wild cards which still bear the word "Wild". Before the design change, such cards in English versions of the game had letters only. Earlier English versions can be recognized by the absence of the white rim that surrounds the edge of most Uno cards.

Other versions of the game use symbols and images in both old and new designs, especially ones with Wild cards that do not bear the word "Wild". There are also language-free versions of the newer styles that do not bear the word "Wild" but have the same styling.

The 2010 "Uno Mod" edition uses symbols instead of letters or numbers.

On September 16, 2017, Mattel released Uno ColorAdd, the first game designed specifically for those suffering from color blindness.

On October 1, 2019, Mattel released a Braille version of their game, with Mark Riccobono, president of the National Federation of the Blind, said in a press release, "The fact that a blind person is now able to play a classic game of UNO straight out of the box with both blind and sighted friends or family members is a truly meaningful moment for our community."

Theme packs
There are many different themes and versions of Uno. These theme games may come with slightly different directions and special cards.


 * American Kennel Club (Herding Breeds) Uno
 * American Kennel Club (Non-Sporting Group) Uno (2006)
 * American Kennel Club|American Kennel Club (Sporting Group) Uno
 * American Kennel Club (Terrier Breeds) Uno
 * Angry Birds Uno (2012)
 * Arsenal Highbury Legends Uno (2007)
 * Avengers Uno (2015)
 * Avengers Assemble Uno (2013)
 * Bandai Uno
 * Barbie Uno
 * Barbie Cali Girl Edition Uno (2004)
 * Barbie – Life in the Dream House Uno (2014)
 * A Bathing Ape (BAPE) Uno (2021)
 * Batman Uno (2005)
 * Batman Begins Uno (2005)
 * Batman: The Dark Knight Uno (2008)
 * Batman v Superman: Dawn of Justice Uno (2015)
 * Beach Uno (2011)
 * Betty Boop Uno (2005)
 * The Big Bang Theory Uno (2012)
 * Braille Uno (2012)
 * BTS (Boy Band) Uno
 * Captain Marvel Uno (2019)
 * Care Bears Uno (2003)
 * Car-Go Uno (2004)
 * Cars Uno (2006)
 * Cars 2 Uno (2011)
 * Cars 3 Uno (2017)
 * Cinderella Uno (2012)
 * Coca-Cola Uno (1998, 2004)
 * Coco (2018)
 * Dare (2014)
 * DC Super Heroes Uno
 * Detective Conan Uno (2017)
 * Diary of a Wimpy Kid Uno (2012)
 * Disney Uno (2002)
 * Disney Electronic Uno (Classic) (2003)
 * Disney Electronic Uno (Modern)
 * Disney Fairies Uno (2009)
 * Disney Pixar Uno (2012)
 * Disney Princess Uno
 * Disney Channel / Disney Shows Uno
 * Disney Sofia The First Uno
 * Disney Theme Park Uno
 * Despicable Me Minion Made Uno
 * Doc McStuffins Uno (2013)
 * Dog Uno (2003)
 * Doraemon Uno
 * Doctor Who Uno (2007)
 * drew house Uno (2021)
 * Drunk Uno (2020)
 * Elvis Presly Uno (2000)
 * Emoji Uno
 * Eragon Uno (2006)
 * Family Guy Uno (2004)
 * Fantastic Four Uno (2005)
 * Fast and Furious
 * Fat Albert Uno (2005)
 * Ferrari Uno (2000)
 * Finding Dory Uno (2016)
 * Fishing Uno (2012)
 * Florida State University Uno (2011)
 * Fraggle Rock Uno
 * Frozen Uno (2014)
 * Frozen II Uno (2019)
 * Glee Uno (2011)
 * Ghostbusters Uno (2016)
 * Golden Compass Uno (2007)
 * Green Lantern Uno (2011)
 * Hairspray Uno (2007)
 * Hanna-Barbera Uno (2004)
 * Hannah Montana Backstage Pass Uno
 * Hannah Montana Best of Both Worlds Uno (2007)
 * Happy Birthday
 * Happy Feet Uno (2006)
 * Harry Potter Uno
 * Hello Kitty Bow Uno (2012)
 * Hello Kitty Friendship Uno (2003)
 * Hi Hi Puffy Amiyumi Uno (2006)
 * High School Musical Uno (2006)
 * High School Musical 2 Uno (2007)
 * High School Musical 3 Uno (2008)
 * Holiday Uno (2009)
 * Hoops and Yoyo Uno
 * Horses Uno (2011)
 * Hot Death Uno (2001)
 * Hot Wheels Uno (2012)
 * House Rules Uno (1998)
 * Hulk Uno (2003)
 * H2O
 * H2O To Go
 * H2O Splash (2005)
 *  Incredibles 2
 * Iron Man 2 Uno (2010)
 * Jelly Belly Uno (2012)
 * John Deere Uno(2010)
 * Jurassic World Uno (2018)
 * Jurassic World: Fallen Kingdom
 * Justice League Uno (2017)''
 * Kittens Uno
 * Kung Fu Panda Uno (2008)
 * Left Handed Uno (2020)
 * Limited Too It's A Girl's World Uno (2008)
 * Lion King (2020)
 * Macy's Parade Uno
 * Magic Tree House Uno (2007)
 * Marvel Heroes Uno (2010)
 * Mario Bros. Uno (2012)
 * Masters of the Universe Origins (2020)
 * Mattel 75th Anniversary (2020)
 * Mickey Mouse and Friends (2020)
 * Minecraft
 * Mini Party Favors Uno
 * Minimalist Uno (2020)
 * Monster High
 * Muppet Show Uno (2003)
 * My Scene Uno (2005)
 * MyUno Uno (2005)
 * National Parks Uno (2002, 2009)
 * New York City Uno (2001)
 * NHL Uno
 * Nightmare Before Christmas Uno (2007)
 * 1990's Uno (2019)
 * Nintendo Uno (2004)
 * Non-Partisan
 * North American Wildlife Uno
 * Nothin But Paper Uno (2020)
 * Notre Dame Uno (2005)
 * NSYNC Uno(2000)
 * The Office (2020)
 * Olympics Tokyo 2020 (2020)
 * One Piece Uno (2003, 2011)
 * One Piece: The New World Uno (Japan-2012)
 * Over the Hedge Uno (2006)
 * PAW Patrol Uno (2015)
 * Peanuts Uno (2002)
 * Peanuts – A Charlie Brown Christmas Uno
 * Peanuts – It's the Great Pumpkin Uno (2006)
 * Peanuts – Be My Valentine Uno (2006)
 * Peanuts Movie Uno (2015)
 * Peanuts – Vintage Peanuts Uno (2005)
 * The Penguins of Madagascar Uno (2012)
 * Penn State University Uno
 * Phineas and Ferb Uno (2012)
 * Pinkalicious Uno (2010)
 * Pirates of the Caribbean Uno (2007)
 * Planes Uno (2013)
 * Planes – Fire and Rescue! Uno (2014)
 * Pokémon Uno (2006)
 * Pokémon: Best Wishes (Japan)
 * Pokémon: XY (Japan)
 * Polly Pocket Uno (2006)
 * Power Rangers Super Samurai Uno
 * Pride Uno (2021)
 * Puppies Uno
 * Ratatouille Uno (2007)
 * Remix Uno (2021)
 * Ren and Stimpy Uno (2004)
 * Retro Uno (2014)
 * Ryan's World (2020)
 * Saved by the Bell (2020)
 * Scooby-Doo Uno
 * Sesame Street Uno (2004)
 * Shark Week (2020)
 * Shopkins Uno (2015)
 * Shrek Uno
 * Shrek 2 Uno (2004)
 * Shrek the Third Uno
 * The Simpsons Uno (2003)
 * The Simpsons (D'oh) Uno (2009)
 * The Simpsons: Springfield / Great Scot Uno (2006)
 * The Simpsons: Treehouse of Horror Uno (2005)
 * Snappy Dresser
 * Sock Monkey Uno
 * South Park Uno (2004)
 * Space Jam: A New Legacy (2021)
 * Speed Racer
 * Spider-Man Uno (2002)
 * Spider-Man 2 Uno (2004)
 * Spider-Man Spider Sense Uno*
 * Marvel Ultimate Spider-Man Web-Warriors Uno (2014)
 * Splash Uno *
 * Splash: Finding Dory Uno
 * SpongeBob SquarePants #1
 * SpongeBob SquarePants #2
 * SpongeBob SquarePants #3
 * SpongeBob SquarePants – Eye Eye SpongeBob! (2008)
 * SpongeBob SquarePants – Jellyfishing (2008)
 * SpongeBob SquarePants – Lost in Time (2006)
 * St. Louis Uno (2005)
 * Star Trek Uno
 * Mattel-produced "Special Edition"
 * Fundex Games "Collector's Edition"
 * Star Wars: The Clone Wars Uno
 * Super Mario (2016)
 * Superman Uno (2005)
 * Superman Returns Uno (2005)
 * Sydney 2000 Uno (1999)
 * Susan G. Komen Themed Uno
 * Teen Titans Uno (2006)
 * Teenage Mutant Ninja Turtles Uno (2014)
 * Texas Uno (2006)
 * Toy Story Uno (2010)
 * Toy Story 3
 * Toy Story 4
 * Trolls (2020)
 * University of Alabama Uno
 * University of Florida Uno
 * University of Georgia Uno
 * University of Kentucky Uno
 * University of Michigan Uno
 * University of North Carolina Uno
 * University of Texas Uno
 * University of Southern California (2020)
 * Uno Artist Series No 1 Jean-Michel Basquiat Uno (2020)
 * Uno Artist Series No 2 Keith Haring Uno (2020)''
 * Uno Artist Series No 3 Nina Chanel Abney Uno (2020)''
 * Uno Artist Series No 4 Obey Giant Uno (2021)''
 * Uno (1971)
 * Uno 25th Anniversary (1996)
 * Uno 30th Anniversary (2001)
 * Uno 35th Anniversary (2011)
 * Uno 40th Anniversary (2016)
 * Uno 50th Anniversary (2021)
 * Uno in FitSand Travel Zipper Carry EVA Hard Case (2016)
 * Uno Deluxe in box
 * Uno Deluxe in Wood Box
 * Uno With Customizable Wild Cards (2015)
 * Uno Uno Corns
 * Uno Express
 * Uno Mod (2010)
 * USA Uno
 * Vacation Uno
 * Vivetta Uno (2021)
 * Wilderness Uno (2016)
 * Wildlife Uno (2012)
 * Wizard of Oz Uno(2007)
 * WWE Legends Uno (2005)
 * World's Smallest Uno (2020)
 * X-Games (1999, 2007)
 * X-Men Uno (2003)
 * Zelda

Note: * indicates HIT Entertainment character, by which Mattel acquired HIT in 2012.

Themed My First Uno games
Card sets only have 36 cards designed for children at least 3 years of age. These sets come in several variants, based on titles for children. My First Uno versions:


 * Angelina Ballerina Uno (2005)
 * Animals Uno
 * Bob The Builder Uno (2007)
 * Clifford the Big Red Dog
 * Curious George Uno (2005)
 * Dora the Explorer Uno (2003, 2010)
 * Dory
 * Elmo Uno
 * Handy Manny Uno (2009)
 * Disney's Jake and the Neverland Pirates Uno (2011)
 * Koala Brothers Uno (2005)
 * Little People Uno (2006)
 * Mickey Mouse Club Uno (2008)
 * Miss Spider's Sunny Patch Friends Uno (2006)
 * Rugrats Uno (1991)
 * Sesame Street Uno (2004)
 * SpongeBob SquarePants and Friends Uno (2012)
 * Thomas & Friends Uno (2010)
 * Where the Wild Things Are Uno (2007)
 * Winnie the Pooh and Friends Uno (2002, 2011, 2012)
 * Yo Gabba Gabba! Uno

Themed video games
Uno versions available on the Xbox 360:


 * Street Fighter II Uno
 * Project Gotham Racing Uno


 * Kameo: Elements of Power Uno
 * Uno 35th Anniversary (see above)

Themed sports teams
Several sports teams each have 112-card sets, featuring players from those teams. The special cards in each deck vary depending on the card set itself. The following teams have confirmed Uno sets.


 * Auburn Tigers (NCAA)
 * England FA (2010)
 * England Rugby (2010)
 * Manchester United
 * Hockey Calgary Flames (2010) NHL NHL Stars of Finland
 * MLB All-Stars American League (2005) American League – Stars of the American League (2006) American League – Baltimore Orioles Miguel Tejada  American League – Boston Red Sox (Regular (2004) and World Series editions (2007))  American League – Boston Red Sox David Ortiz Limited (2007)  American League – Chicago White Sox (2007)  American League – Chicago White Sox World Series Championship  American League – Los Angeles Angels of Anaheim (2005)  American League – New York Yankees (2006)  American League – New York Yankees Derek Jeter Limited (2007)  American League – Seattle Mariners (2003)  American League –Texas Rangers (2006)  National League  National League – MLB All Stars National League National League – Chicago Cubs  National League – Chicago Cubs: Derek Lee (2006)  National League – Houston Astros (2005)  National League – New York Mets (2005)  National League – New Your Mets: David Wright Special (2007)  National League – Philadelphia Phillies (2005)  National League – St. Louis Cardinals (2006)
 * NBA All-Stars (East and West) Eastern Conference – NBA All Stars Eastern Conference (2006)  Eastern Conference – Boston Celtics Legends (2005)  Eastern Conference – Cleveland Cavaliers: LeBron James Special Edition (2007)  Eastern Conference – New York Knicks (2006)  Western Conference – NBA All Stars Western Conference (2006)  Western Conference – Los Angeles Lakers Legends Edition (2006)  Western Conference – Los Angeles Lakers Kobe Bryant Special Edition (2007)  Western Conference – San Antonio Spurs (2006)
 * American Football Chicago Bears (2006) Dallas Cowboys (2006) Green Bay Packers (2007) Minnesota Vikings National Football League NFC Edition (2006) New England Patriots (2007) New York Giants (2006) New York Jets (2009) NFL American League (2006) NFL National League (2006) Phil. Eagles (2006) Pittsburgh Steelers (2006) Super Bowl XL Steelers Special Edition (2006)
 * NFL Greatest Players Editions Tom Brady (2007) Reggie Bush(2007) Brett Favre (2007) LaDainian Tomlinson (2007) Brian Urlacher (2007)

Special Uno games

 * Uno Attack (Uno Extreme in the UK and Canada) (1999)
 *  Uno Attack Jurassic World (2018)
 * Uno Attack Refill Deck
 * Uno Bingo (1997)
 * Uno Blast (2012)
 * Uno Blitzo (2000)
 * Uno Choo-Choo (2011)
 * Uno Color Screen
 * Uno Deluxe
 * Uno Dare (2014)
 * Uno Dice (1987, 1996, 2011)
 * Uno Dominoes (1986)
 * Electronic Uno
 * Uno Flash (2007)
 * Uno Flip (2009) (Target Store Exclusive)
 *  Uno Flip (2019)
 * Giant Uno (2016)
 * Giant BTS Uno (2020)
 * Uno H2O'' (2004)
 * Uno H2O'' To Go
 * Uno Hearts (1994)
 * Uno Junior (1992)
 * King Size Uno (1994)
 * Uno Madness (1995)
 * Uno Moo (2008, 2014)
 * Uno Power Grab
 * Uno Reflex
 * Uno Roboto
 * Uno Royal Revenge (2014)
 * Uno Rummy Up (1993)
 * Uno Spin (2005)
 * Uno Spin Hannah Montana (2005)
 * Uno Spin One Piece (Japan)
 * Uno Spin To Go (2010)
 * Uno Stacko (1994)
 * Travel Uno Stacko
 * Uno Tippo (2009)
 * Uno Slam
 * Uno Tiki Twist (2014)
 * Uno Wild Jackpot (2016)
 * Uno Wild Tiles (1982)
 * Get Wild for Uno (2016)
 * Uno Minecraft (2018)
 * Uno Showdown Supercharged (2020)

Video games

 * Hot Death Uno (IBM – 1993)
 * Uno (handheld video game – 2000)
 * Uno (handheld video game for the Game Boy Color of the classic Uno board game)
 *  Uno DX (Japanese exclusive Sega Saturn game by Mitsui & Co. – 1998)
 * Uno (PlayStation Network)
 * Uno (Xbox Live Arcade)
 * Uno Rush (Xbox Live Arcade)
 * Uno Challenge (mobile version of the classic Uno board game)
 * Uno Free Fall (puzzle game for mobile phones)
 * Uno 52 (Nintendo Game Boy Advance)
 * Super Uno (Super Famicom)
 * Uno (Facebook) (Adobe Flash–based version of the classic Uno card game produced by GameHouse Studios)
 * Uno (iPhone) Features online and local play. Produced by Gameloft
 * Uno (iPad) The same as on the iPhone, but with enhanced graphics. Produced by Gameloft
 * Uno (Android) Released as three versions: SD, HD and Free with adverts. Produced by Gameloft
 * Uno (DSi)
 * Uno (WiiWare) Produced by Gameloft
 * Uno & Friends (various platforms)
 * Pocket Uno
 * Uno and Uno & Friends for Windows Phone
 * Uno Undercover (Windows)
 * Uno (2016 video game for PC, PlayStation 4, and Xbox One by Ubisoft)
 * Uno – 2017 video game (release of 2016 game on the Nintendo Switch), produced by Ubisoft

Variations
Many variations from standard gameplay exist, such as Elimination Uno, Speed Uno and Pirate Uno.

In 2018, Mattel released a spin-off of Uno entitled Dos; the game is differentiated primarily by having a "center row" of discard piles, where pairs of cards that add up to the sum of a card on the top of one of the piles may be discarded.

The game can be played with two decks of standard playing cards, if the jokers are marked up as the zeroes of the four suits, and the royalty treated as the special cards.

Uno: Slots
In 2002, International Gaming Technology (IGT) released a video slot machine based on Uno.

Uno: The Game Show
In March 2013, it was announced that Mattel and the Gurin Company were teaming up to create a game show based on the card game, produced as a half-hour daily strip with a $100,000 cash jackpot along with a primetime version in which contestants competed for 1 million dollars. However, the idea was scrapped later on.

Film adaptation
On February 4, 2021, an action heist comedy film based on the game was announced to be in development for Mattel Films with Lil Yachty of record label Quality Control Music developing and being eyed for the lead role alongside the label's managers Kevin "Coach K" Lee and Pierre "P" Thomas, and Brian Sher for Quality Films producing, Marcy Kelly writing, and Robbie Brenner and Kevin McKeon leading the project as executive producer and supervising producer, respectively.

Similar games
Uno is a member of the shedding family of card games. The shedding family of card games consists of games where the objective is to get rid of all your cards while preventing the other players from getting rid of their cards.


 * Crazy Eights
 * Black Jack (Switch)
 * Switch (card game)
 * Eleusis
 * Last Card
 * Macau
 * Mao
 * Mau Mau (game)
 * O'NO 99
 * One Card (game)
 * Phase 10
 * SKIP-BO
 * Taki
 * Whot!