Your notes are already where you think. Now they’re where the idea gets to be real.

The game beside this lives in a note. Yours can too: the AI you already use builds it right there in your note.Yours can too: write the idea down, then just ask for it — it is built right there in your note. Then send the link and play it with your friends.

Play it now or connect your AIor start a note of your own

Free to start: 5 live apps, no card.

Download on the App Store · Web · Android soon

What to do here

Play it. Share it. Make your own.

  1. Play a game

    Tap a game on this page and you are playing. Nothing to install.

    Pick a game

  2. Bring a friend

    Open the game in the app and share it. Your friend taps the link and lands in your room. All they need is a free account.

    Open the app

  3. Make your own

    Write your idea in a note. Connect the AI you already use and it builds the game right there in your note. Ask again to change it.Write your idea in a note, then just ask for it — it is built right there in your note. Ask again to change it.

    Connect your AI Start a note

Live right now

Not screenshots. Tap any of them.

Four real games, running live. Tap one to play. Want a friend in it? Open it in the app and send them the link.

A real frame of Mykonos Island: whitewashed houses, bougainvillea and a canal Mykonos Island — Build Together Build a whitewashed island with friends — every tile one of you places appears for everyone. Mykonos Island Voxels by boona13 (MIT) A real frame of Space Pirates: a fighter above a planet Space Pirates — Squadron Fly a squadron with your friends against pirate raiders, every pilot live. Space Pirates by the Babylon.js team (Apache-2.0) A real frame of HexGL: a racing ship on the start grid HexGL — Ghost Racing Anti-gravity racing where friends on the track fly beside you as glowing ghosts. HexGL by Thibaut Despoulain (MIT) A real frame of Snowflow: a rider and a wraith on the snow Snowflow Surf a living snowscape on a wave of frost, while wraiths hunt you and your friends. Plays on a computer — it needs a desktop browser with WebGPU. Snowflow by Maksymilian Dendura (MIT)

Connect your own AI

Your AI builds it. Your friends play it.

Connect the AI you already use to your NotesMosaic account. It can build a game for you, or bring one you made.

Build with your own AI

Add NotesMosaic to your AI app — the guide has the steps for each one. Your AI builds in your account and hands you a play link for every version.

Connect your AI

Checked on your own devices

Before a game goes live it is run on your own devices: on a big screen and at phone size — and with two players in one room if it’s multiplayer.

How it works

Update it live

Push a new version to every player in seconds. Something off? One step puts the last version back.

See the steps

For creators: half of what a game’s ad breaks bring in goes to the person who made it — once the game is certified and reviewed. The creator program’s terms

The arcade

Games you already love. Now with your friends in them.

33 open-source classics, each credited to the person who wrote it, and 7 originals from our own studio. Tap one to play. Want friends in it? Open it in the app and send them the link.

Runners 6

One thumb, one more try.

A real frame of Cave Runner Cave Runner Sprint down a lamp-lit mine: swipe to change lane, jump the spikes, slide under the beams, grab the coins and unlock new runners. Cave Runner by tope-olajide (MIT) Play A real frame of Downtown Dash Downtown Dash Sprint down a sunset city street: swipe to change lane, jump the barriers, roll under the gates, dodge the traffic, grab coins and power-ups, unlock new runners. Downtown Dash by Mosaic house studio (MIT) Play A real frame of Jetdash Jetdash Hold to boost, release to fall — dodge everything for as long as you can. LittleJS Arcade: Jetdash by Frank Force (MIT) Play A real frame of Skyhop Skyhop Bounce from platform to platform, higher and higher — one slip and it is a long way down. LittleJS Arcade: Skyhop by Frank Force (MIT) Play A real frame of Spike Hop Spike Hop One button: jump the spikes, ride the pads and reach the end of each level. LittleJS Arcade: Geometry Jump by Frank Force (MIT) Play A real frame of Stormspan Stormspan Outrun the squall along a storm-lit causeway of six-sided stones: swipe to turn at each corner, jump the gaps, slide under the spars and drag sideways to sweep up coins. Stormspan by Mosaic house studio (MIT) Play

Sports 5

Tables, courts and courses with real physics.

A real frame of Bowling Bowling Ten-pin bowling with real physics: drag the ball to line it up, flick it down the lane, chase the strike. Bowling by Ilia Grigorev (GPL-3.0) Play A real frame of Free Throw Free Throw Sink as many free throws as you can before the clock runs out. LittleJS Arcade: Free Throw by Frank Force (MIT) Play A real frame of Mini Golf Mini Golf Putt across tricky little courses in as few strokes as you can. LittleJS Arcade: Mini Golf by Frank Force (MIT) Play A real frame of Pinball Pinball Launch, flip and keep the ball alive. LittleJS Arcade: Pinball by Frank Force (MIT) Play A real frame of Pool Pool Cue up, read the angles and sink every ball. LittleJS Arcade: Pool by Frank Force (MIT) Play

Board games 5

Two players, two devices: choose player vs player and a friend in your room is your opponent.

A real frame of Checkers Checkers Jump to capture, reach the far side and crown your king. LittleJS Arcade: Checkers by Frank Force (MIT) Play A real frame of Chess Chess The game of kings. Play a friend in the same room, or the computer. LittleJS Arcade: Chess by Frank Force (MIT) Play A real frame of Drop Four Drop Four Drop discs and line up four before your rival does. LittleJS Arcade: Drop Four by Frank Force (MIT) Play A real frame of Go Go Surround territory on a 9×9 board. LittleJS Arcade: Go by Frank Force (MIT) Play A real frame of Reversi Reversi Flank your rival's discs to flip them — the board can turn in one move. LittleJS Arcade: Reversi by Frank Force (MIT) Play

Puzzle 6

Match, aim, clear, solve.

A real frame of Bobble Pop Bobble Pop Aim, bounce off the walls and pop matching bubbles before they reach the bottom. LittleJS Arcade: Bobble Pop by Frank Force (MIT) Play A real frame of Crate Pusher Crate Pusher Push every crate onto its target — you can push, never pull. LittleJS Arcade: Sokoban by Frank Force (MIT) Play A real frame of Glazeworks Glazeworks Drag glazed tiles onto an 8 by 8 table, three pieces at a time, and fill a row or a column to fire it. Glazeworks by Mosaic house studio (MIT) Play A real frame of Match Three Match Three Swap gems, match three, chain the combos. LittleJS Arcade: Match Three by Frank Force (MIT) Play A real frame of Minesweeper Minesweeper Read the numbers, flag the mines, clear the field. LittleJS Arcade: Minesweeper by Frank Force (MIT) Play A real frame of Sudoku Sudoku Fill the grid so every row, column and box holds 1 to 9. LittleJS Arcade: Sudoku by Frank Force (MIT) Play

Racing 4

Top-down, pseudo-3D and full 3D.

A real frame of Kit Racer Kit Racer Drift a little truck around a toy track in 3D: tyre smoke, skid marks, lap times and a best lap to beat. Starter Kit Racing by Kenney and mrdoob (MIT) Play A real frame of Micro Racer Micro Racer Race tiny cars around tight tracks — physics, drifts and close finishes. LittleJS Arcade: Micro Racer by Frank Force (MIT) Play A real frame of Speedway Speedway Pass the pack and beat the clock on a pseudo-3D road. LittleJS Arcade: Speedway by Frank Force (MIT) Play A real frame of Spy Driver Spy Driver Drive fast, shoot straight and keep the civilians safe. LittleJS Arcade: Spy Driver by Frank Force (MIT) Play

Arcade 5

Shooters, defenders and reflex games — quick to start, hard to put down.

A real frame of Emoji Survivors Emoji Survivors Outlast the emoji horde: move, level up, stack weapons and see how long you last. LittleJS Arcade: Emoji Survivors by Frank Force (MIT) Play A real frame of Missile Defense Missile Defense Incoming! Tap or click to launch interceptors and keep your cities standing, wave after wave. LittleJS Arcade: Missile Defense by Frank Force (MIT) Play A real frame of Powerwing Powerwing A side-scrolling space shooter: blast through the waves and power up your wing. LittleJS Arcade: Powerwing by Frank Force (MIT) Play A real frame of Robo Rescue Robo Rescue A twin-stick arena shooter: destroy the robots, save the humans, survive the wave. LittleJS Arcade: Robo Rescue by Frank Force (MIT) Play A real frame of Tank Combat Tank Combat Bank your shots off the walls and clear wave after wave of enemy tanks. LittleJS Arcade: Tank Combat by Frank Force (MIT) Play

Cards 2

The solitaires everyone knows.

A real frame of FreeCell Solitaire FreeCell Solitaire Every card is face up and almost every deal can be won — sort them all home. LittleJS Arcade: FreeCell Solitaire by Frank Force (MIT) Play A real frame of Klondike Solitaire Klondike Solitaire The solitaire everyone knows: build the foundations from ace to king. LittleJS Arcade: Klondike Solitaire by Frank Force (MIT) Play

Strategy 3

Plan, build and take the map.

A real frame of Hearthold Hearthold Build a village around your hearth: farms and quarries that work while you are away, depots, watchtowers, walls and a barracks. Hearthold by Mosaic house studio (MIT) Play A real frame of Maze Tower Defense Maze Tower Defense Build your own maze of cannons, lasers and walls, and hold the line against wave after wave. HTML5 Tower Defense by oldj (MIT) Play A real frame of OrbitSwarm OrbitSwarm Build ships, send your swarm from planet to planet and take the galaxy. LittleJS Arcade: OrbitSwarm by Frank Force (MIT) Play

Fighting 1

One on one, best of three — against the computer or a friend in your room.

A real frame of Dusk Duel Dusk Duel A one-on-one fighter on a rooftop at dusk: jab, kick, sweep, guard, and a rush when your bar is full. Dusk Duel by Mosaic house studio (MIT) Play

3D worlds 1

Open places to roam on foot, on wheels and in the air — with your friends in them.

A real frame of Sketchbook Sketchbook A 3D playground to roam with friends: walk, jump, get in a car, fly the airplane or the helicopter, try the race tracks and the mega ramp. Sketchbook by swift502 (MIT) Play

Voxel worlds 2

Islands of blocks to explore, dig and build on — every change shared with the friends beside you.

A real frame of Emberwick Harbour Emberwick Harbour A block-built harbour town whose lighthouse has gone dark. Emberwick Harbour by Mosaic house studio (MIT) Play A real frame of Loamlands Loamlands An island of blocks to explore, dig and build on — hills, beaches, forests and snow, made from a seed. Loamlands by Mosaic house studio (MIT) Play

Open-source games by their authors, changed by NotesMosaic so friends can play them together — the four live games above and every game in the arcade. The originals and their licenses:

Fun first. Affordable, plainly.

Playing and joining a friend's world is always free — all a friend needs is a free account. Mosa chat is unlimited on every plan. Paid plans lift the build limits and add room; Basic halves the ads, and Plus and Pro play without ads.

Free
$0
forever
  • 5 live apps at a time — delete one, free a slot
  • 15 edits a day
  • Unlimited Mosa chat
  • 50 MB of notes and builds
  • Share links — friends join free with an account
Basic
$4.99
per month
  • Unlimited builds and edits
  • $2 of Mosa AI credits a month
  • 200 MB of notes and builds
  • Half the ads — a break every 30 minutes of play
Plus
$9.99
per month
  • Everything in Basic
  • No ads
  • $4 of Mosa AI credits a month
  • 1 GB of notes and builds
Pro
$15
per month
  • Everything in Plus
  • No ads
  • $6 of Mosa AI credits a month
  • 2 GB of notes and builds

On the free plan an ad plays no more than about once every 15 minutes of play (Basic: every 30; Plus and Pro: never) — between games, as you leave full screen, or at a game’s natural pause (a level’s end, a game over, the menu). In a game played straight through, an ad plays after a ten-second countdown on screen. For creators: half of what a game’s ad breaks earn goes to the person who made it, with a share of the feed’s ads by play time, once the game is certified and reviewed. The creator program’s terms.

Your next note could hold a whole world.

Your notes are already where you think. Now they are where the idea gets to be real — your writing, your files, the conversation and the game itself, all on one page. Free to start; friends join free with an account.

Play now or open the app — it’s free →

Questions? We answer fast — notesmosaic@gmail.com