Six curves · one arena · sixty ticks a second

Your line never stops.
Neither does theirs.

Steer a curve that grows behind you. Touch any trail — yours, anyone's, the wall — and your round is over. One player per phone, and the last one still turning takes the point.

Play in your browser Android — soon iPhone — soon

Real footage, not a mock-up: six bots playing one round, recorded from the shipping build at seed 20260903. The simulation is deterministic, so this is the same round every time this page loads.

The only control

Left half, right half.

Hold the left side of the screen to turn left. Hold the right side to turn right. Let go and you go straight. There is no accelerating, no braking and no analogue steering — your curve is turning or it isn't, and the whole game is deciding when.

Speed
84 units/s
Turn rate
120 °/s
Full circle
3.0 s
Tick
60 Hz, fixed

The only way through

Every few seconds, your curve stops drawing.

It leaves a hole behind you, and everyone else's holes are the only openings in a board that is filling up. Finding one and fitting through it is the whole skill of this genre — and it is tighter than it looks. The hole is 15.4 units of arena. Your head is 4. Take a collision radius off each edge and there are 7.4 units of daylight to aim at, at 84 units a second.

15.4 units of hole 7.4 you fit through their trail you
HOLE_INTERVAL 150 ticks + rand(0, 300) · HOLE_LENGTH 11 ticks · LINE_WIDTH 4 units

Ways to play

Everyone on their own phone.

No passing one device around and no split screen. Six seats, six people, six phones — or nobody else at all, because the bots are there whether or not anyone answers.

Play online

Matched with whoever is queueing, worldwide. Bots fill the empty seats rather than making you wait for them.

Play with friends

One code, read out loud, and everyone who types it is in the same room. Nothing to add and nobody to accept.

Play vs AI

Four tiers, offline, no connection needed. Plus a daily round on the same seed for everyone, once a day.

What it doesn't do

Nothing to sign up for. Nothing to type.

This is the short version of the privacy policy, which is worth reading because there is so little in it.

  • No account
    No sign-in, no email, no profile. Open it and you are playing.
  • No ads, no purchases
    Nothing is sold inside the game and nothing is sold about you.
  • No tracking
    No advertising ID, no analytics SDK, no third-party anything — including on this page, which loads no fonts, no scripts and no pixels from anybody else.
  • No chat, and no name you write
    Your name is drawn, not typed: one adjective and one noun from a fixed list of 128 each. There is nothing anybody can send you.
  • Colour is never the only signal
    Every seat also carries a shape — circle, square, diamond, star — because red and green are the same colour to about one man in twelve.
  • One button deletes it
    Your records, your drawn name and every row you own on the board, gone from the server on the spot.
  • Get it

    The browser one is ready now.

    Same game, same server, same rounds — a link converts on a click and needs nobody's review. The store builds are finished and waiting on exactly that.

    Live
    Browser
    app.curve2gether.com — nothing to install, and it plays against the same people the phone builds do.
    Not yet
    Android
    Built and signed, in review queue order. Play in the browser meanwhile — your records live on your device either way.
    Not yet
    iPhone
    Same build, same wait. There is no beta list to join and nothing to leave an address for.