Instant to start
Open the page, pick how many opponents, tap Deal. No account wall, no download, no splash video. The next round starts the moment the last one ends.
About Us
About fourcolors.app
We publish Four Colors — a free, modern browser version of the four colours match-and-shed card game, the game like Uno — against one to three computer opponents, on any screen.
Our craft
Match. Shed. Call it.
Find the match, pick the right moment for the nasty card, tap 1 in time. That loop is everything we design around.
- Cards in the deck
- 108
- Bot opponents
- 1–3
- Points to win
- 250
Cards in the deck
Bot opponents
Points to win
What we make
A free four colours game that stays in the browser
fourcolors.app is the site behind our version of Four Colors. You sit at a table with up to three computer players. Everyone gets seven cards; on your turn you match the top of the pile by colour or by number, play an action card, or switch colours with a Wild. First to empty their hand scores the cards left in everyone else’s.
We are not an app-store publisher and there is nothing to download. The game is the website: short load times, the same table on phones and desktops, and no account wall. Your stats live in local browser storage on your device.
The rules, scoring and controls described in our how-to-play guide and FAQ match this exact build — the same engine runs on the home page.
Origins
From Crazy Eights to four colours
The four colours game is the most famous member of a very old family. Knowing where it comes from explains why the rules are shaped the way they are.
- 01
Crazy Eights
Shedding games — where you win by getting rid of your cards first — are old and found all over the world. The best known in English is Crazy Eights, played with an ordinary 52-card deck: match the top card by suit or rank, and eights are wild. Variants of it were widely played by the mid-20th century under many local names.
- 02
Four colours, one deck
In 1971, Merle Robbins, a barber from Reading, Ohio, swapped the suits for four colours and added cards that skip, reverse and make people draw. His family game became UNO, was later acquired by Mattel, and turned the four colours format into one of the best-selling card games ever made.
- 03
This build
fourcolors.app is an independent, modern browser version of that four colours, match-and-shed game. It is not affiliated with Mattel or UNO. What is ours is the implementation: a table that fits a phone, readable bots, a real catch mechanic, colour-blind shape marks, full keyboard play, and synthesized sound with a remembered mute.
What we stand for
Principles behind every deal
Standard rules, stated plainly
A 108-card deck, match by colour or number, the five classic action cards, a last-card call with a two-card penalty, and scoring to 250. Where we simplify a rule — no Wild Draw Four challenge, no stacking — the guide says so.
Yours to keep
Rounds and matches won, best round and win streaks live on your device. We do not hold your record behind a login, because there is no login.
Free, for real
The whole game is free. No energy meters, no coins, no interstitial video ads between rounds, and no “premium” deck.
Who it is for
Anyone who wants a quick hand of cards
fourcolors.app is family-friendly, with no chat and no store. A poor fit if you want online multiplayer; a good fit if you want the four colours game you know, ready in a second, against opponents that play a fair game.
Short sessions
A round takes two to five minutes; a full match to 250 is a coffee break. Built for a phone on the couch or a tab between tasks.
Families and new players
The rules fit on a card and the table shows you which cards are playable. It is an easy first card game — and one adults still argue over.
Practice before game night
Sharpen your timing on the 1 button and learn when to hold a Wild, without anyone at the table rolling their eyes.
Why this site
How fourcolors.app is different
There are plenty of games like Uno online. Most are wrapped in ads, run in a cramped landscape frame, or hide the rules. This one is built to be fast, clear and fair.
The last-card call, done properly
Most browser versions either skip the call or make it a guessing game. Here you can call early while holding two cards, you get a clear window after your play, and when a bot forgets, the button turns into Catch!.
Readable at a glance
Playable cards lift out of your hand and the rest dim. The colour in force is shown as a ring, a label and a shape. The status line says exactly what just happened — “Milo played Draw Two — you draw 2”.
No clutter
No auto-playing video, no fake “download our app” banners, no dark patterns. The how-to-play guide and FAQ describe this exact engine, not a generic write-up.
How we build
Designed for the browser you already have
The whole game runs on your device. The rules engine is plain TypeScript with no framework; the table is HTML and CSS; every sound is synthesized with the Web Audio API, so there are no audio files to download. The bots think locally, too — nothing about your hand ever leaves the page.
Play anywhere
Phone, tablet and desktop share one table. Tap on a touchscreen, click with a mouse, or play entirely from the keyboard.
Stats on your device
Rounds and matches won, best round, and win streaks are stored locally, along with your sound and opponent settings.
Quiet improvement
We watch aggregate usage through Google Analytics — such as how many rounds are played — to improve pacing and polish. Details are in our Privacy Policy.
Contact
Stay in the loop
A rule you think we got wrong, a bot that played something odd, a bug report, or a simple hello — we read every message.
Stay in TouchUNO is a trademark of Mattel. fourcolors.app is an independent game and is not affiliated with, sponsored or endorsed by Mattel.