Arcadópolis

A retro operating system full of music apps and games, in your browser.

Arcadópolis (also spelled Arcadopolis) is a computer desktop that opens in your browser at arcadopolis.com. It has more than 40 apps and games. 51 are games: classics like chess, solitaire, mahjong, sudoku and dominoes, word games, music and rhythm games, and 3D golf and mini golf. Many apps are musical, like a synthesizer and an 8-bit tracker; there is a painting museum and a library you walk through in 3D, a floating plaza, and online play.

Each of its 102 themes changes everything: the desktop, the windows, the animated wallpaper and the instrument you hear. It is free, with no ads or tracking, works on computers, tablets and phones, installs as an app and keeps working offline. It is in English and Spanish, for ages 16 and up. It is made by the musician Andromeda Phantom, in Mexico.

The 51 games

Eight Notes
The daily music challenge: everyone gets the same eight notes to compose a 16-step melody and share it.
Musical Snake
Every bite is a note: eat them in order to build the scale while the snake plays the melody of what it has eaten.
Happy Sisyphus
A rhythm game: notes come down the track and you play them on time; in Realistic mode, on a real piano.
Melody Echo
A musical memory game with 19 public-domain melodies; also as an online duel.
Musical Trains
Notes on three tracks that the trains play as they pass.
Trivia
Ten twenty-second questions across ten categories, with a daily challenge and online matches.
Chess
Against the computer on three levels, two players, or the daily puzzle: a mate in 2, the same for everyone.
Checkers
English (8 × 8) or international (10 × 10) checkers, against the computer on three levels or two players.
Reversi
Trap your opponent’s pieces on a 64-square board, against the computer or two players.
Four in a Row
Drop pieces into a 7-column frame and get four in a row before the computer or another person.
Ultimate Tic-Tac-Toe
Nine tic-tac-toe boards inside one: win three small boards in a row, against the computer or two players.
Dominoes
Partner dominoes with a double-six set, against the computer or online with other people.
Mahjong Solitaire
Remove the tiles in pairs across three layouts of 72 or 144 tiles; every deal can be solved.
Solitaire
Four solitaires in one: Klondike (draw 1 or 3), Spider, FreeCell and Pyramid, with undo and hints.
Blackjack
A felt table with a 6-deck shoe: hit, stand, double or split, betting tokens that can’t be bought.
Poker
No-limit Texas hold’em against four computer players, with tokens that can’t be bought or exchanged for anything.
Diamond Moon
A steam-powered card duel against gambling automatons: play secret cards, dodge the public ones and win the gem.
Sudoku
Four levels with a single solution, a daily sudoku, pencil notes and hints that explain why.
Word of the Day
Guess the five-letter word in six tries, in English or Spanish; the daily word is the same for everyone.
Daily Crossword
A new crossword every day with 12 words about painting, books, music and Arcadópolis.
Word Search
Find the hidden words: 14 themes and three sizes, from 10 × 10 to 14 × 14, plus a daily puzzle.
Memory
Find pairs with 36 paintings from the Museum or by ear alone; solo, 2 to 4 players or against the computer.
Minesweeper
The classic of clearing the field without stepping on a mine, with an online race: the same board for everyone.
Golf
Nine holes (par 29) among the ruins of the Fields of Arcadia, with wind and weather vanes; alone or 2 to 4 taking turns.
Mini golf
Nine miniature courses, one for each world of Arcadópolis, in a plaza in the Fields of Arcadia.
Pool
8-ball and 9-ball on a petrol-blue table, against the computer on three levels or two players.
Block Breaker
Break metallophone bars with a note head: each bar plays the next note of the song. 12 levels, 12 tunes.
Sea Battle
Submarines and sonar under the sea of Coralópolis: sink your rival’s five submarines on a 10 × 10 sea, against the computer or two players.
Parchís
The classic Spanish cross-and-circle board game for 2 to 4 players: against the computer on three levels or together, with captures, blockades and safe squares.
Mancala
The seed-sowing game: 12 pits, 2 stores and every seed sounds like a marimba. Against the computer on three levels or two players.
Snakes and Ladders
The classic, made musical: 100 squares, 8 ladders that climb playing a scale and 9 snakes that slide down in a glissando. For 2 to 4 players.
Conquián
The Mexican rummy with a 40-card Spanish deck: meld 9 cards before the computer does, on three levels.
Lotería
Mexican Lotería with 54 original cards and a caller: mark your 16-card board with beans and shout “¡Lotería!” before your neighbors.
Pinball
The Plaza pinball table: a fountain that plays notes with every bounce, lanterns that raise the bonus, letters and a bell. Three balls.
Jigsaw Puzzles
Jigsaw puzzles from 24 to 500 pieces with 356 paintings from the Museum, by 40 painters. With a painting of the day and album stickers.
Nonograms
Nonograms of 8 × 8, 16 × 16 and 32 × 32, solvable by logic, that reveal the creatures of the Bestiary in pixel art.
Octaves
Slide the tiles and merge two equal notes to climb an octave, from C1 to C8, the highest key on the piano. With sound.
Pipe Organ
Turn the ducts so the air reaches every organ pipe: when they are all connected, a chord of the Canon sounds.
The Museum Storeroom
Push the painting crates onto their marks across 24 logic levels, with unlimited undo and a goal of the fewest pushes.
Singing Gems
A match-3 game of singing crystals: each one is a note and the phrase at the top builds a melody. With specials and two modes.
First Lines
Guess the book from its first sentence: 136 classics from the Library in English and Spanish, with 10-round games and a daily challenge.
Who Painted It?
Guess the painter or the painting from a close-up detail: 356 works from the Museum by 40 painters, with 10-round games and a daily challenge.
Golden Ear
Ear training: recognize intervals, chords and instruments on three levels, with a keyboard that shows the notes.
Sing the Melody
Sing or hum 10 public-domain melodies and see how in tune you were, note by note. Your voice is never recorded.
Meteor Shower
Defend the Moon base from twelve real meteor showers with beams of light that burst in chains.
Crystal Defense
A musical tower defense game: instruments that fire on the beat protect a crystal from 15 waves of static.
Mars Rover
An endless run with the rover across Arcadia Planitia: jump cracks and rocks in Mars gravity and collect minerals.
Minigame Party
100 minigames for up to 4 players on one screen, with CPUs, controllers and keyboard: tournaments or single games.
Piano Football
You’re the goalkeeper: save every shot by playing its note on time on a 32-key piano, with a MIDI keyboard, your computer or the screen.
Trazo
Soccer drawn with light in a forest clearing: sketch passes and shots in golden ink, with quick matches and ten challenges.
The Nightingale
Sing over a backing track with your keyboard or finger: your melody is painted in cobalt on a porcelain vase and exports as MIDI.

The apps

Museum
Pinacópolis, a 3D painting museum: three wings, 40 rooms and more than 440 public-domain works, with notes, routes and a guided tour.
Library
Bibliópolis, a 3D library with 226 public-domain classics, 126 in Spanish and 100 in English, to read right there.
Arcadópolis Plaza
A 3D plaza on an island floating in space, at night, from where you walk to the other places.
Andromeda Phantom DAW
A complete music studio: multitrack DAW, a synthesizer with over a thousand sounds, drums, theory, a sampler, voice effects and a visualizer.
Arcade 3D
A 3D arcade hall: walk among the cabinets and open each game.
Sound Stamps
Compose by stamping notes onto a staff.
Chiptunia Tracker
Compose 8-bit songs on four channels, like on classic consoles.
Studio
The music-making apps: Staff, Endless Jam, Chord of the Day, Humming and more.
Recorder
Record what happens in Arcadópolis as video or audio only.
Atelier
Draw, edit photos and make pixel art: real-feeling brushes, 100 filters, AI background removal and frame-by-frame animation.
Typewriter
Write without distractions or build screenplays with scenes, characters and notes; export to PDF, .docx and Fountain.
Checkwave
Required and optional tasks, habits with streaks and a timer, colored notes and a calendar.
Writing
Fridge magnets for writing poems, Spanish décimas with a syllable meter, and the Bestiary, the encyclopedia of Arcadópolis mythology.
Sticker albums
Nine sticker albums and 507 stickers, with paintings, books, places from the 3D worlds, games and themes; new stickers hide every day at noon.
Themes
102 themes, 22 of them free: each one changes the desktop, the windows, the animated wallpaper and the instrument you hear.
Avatars
Create your avatar in 2D, 3D or pixel art.

Frequently asked questions

What is Arcadópolis?

A retro operating system that runs in your browser: a desktop with more than 40 apps and games (51 of them games), many of them musical, that changes its style with 100 themes.

How much does it cost?

Nothing: it is free and has no ads. Of the 102 themes, 22 are free; the rest will come in a premium pack. If you like, you can support it with a Ko-fi donation, which unlocks nothing.

Do I need an account?

No. Everything works without an account except online play. With a free account your progress follows you to any device and you unlock more themes.

Does it work on phones?

Yes: on computers, tablets and phones. You can install it as an app from your browser and it works offline.

What age is it for?

Ages 16 and up.

Can I play with other people?

Yes: partner Dominoes, Trivia, Melody Echo duels and Minesweeper races, online.

Open Arcadópolis →