Set the number of players and their names in Settings. The host reads a question and presses "Open question" (Space). The first player to press their key or button is shown big — listen to the answer and press "Correct" (Enter) or "Wrong" (Backspace). A correct answer scores and ends the question; a wrong one passes the turn to the next player who buzzed (or reopens the buzzers for everyone else if nobody did). Start the next question with "Open question" again.

The browser records the moment of every key or touch event, and the buzzer compares those times. Presses that arrive in the same animation frame are sorted by time together, so even near-ties get an order. Note that many keyboards limit how many keys (or which combinations) register at once, and tablets have a maximum number of touch points. Try a simultaneous press with everyone before a real game.

Pressing before the host opens the question (including between a correct answer and the next question) is a false start — even a near-simultaneous press counts if it came before the question opened. Presses nearly simultaneous with Correct, Wrong, Undo or Reset are likewise judged by whether they came before or after the host's action (a press just before Correct still gets a place in the buzz order; one just after it is a false start). Turn on "A false start sits out the next question" in Settings and that player's presses are ignored for the first question opened after the false start. If everyone false-starts before the next question, no one sits it out (a question with everyone sitting out could not be played), and the screen and announcement say so. False starts can't be undone: undoing a correct or wrong call, an opened question or a reset keeps any false start made after it, along with its sit-out. Undoing a wrong call also keeps the places of anyone who buzzed after it (the turn goes back to the player whose wrong call was undone); undoing an opened question removes that question and its buzz order. Undoing a score edit (the score field in Settings or "Reset scores to 0") restores only the scores — the turn, the buzz order, false starts and sit-outs stay as they are. "Reset" cancels the current question and goes back to before it was opened, including the points it added or took away (anyone sitting it out sits out the next question instead). Before a question is opened, Reset clears the planned sit-outs. A reset can itself be undone.

Yes. Press "Change key" for a player in Settings, then press the key you want. Choosing a key another player uses swaps the two. Space, Enter and Backspace are reserved for the host. You can use letter, number, numpad and arrow keys; symbol keys aren't allowed because their printed characters vary between keyboards. Keys are matched by their physical position rather than the typed character, so they keep working with any input method. In browsers that can't read the keyboard layout (such as Firefox and Safari), key names are shown as on a US (QWERTY) keyboard, so on AZERTY, QWERTZ and other layouts the label on screen may differ from the letter printed on the key — check the on-screen label, or press "Change key" and then the key you want.

Browsers only allow sound after your first tap or key press on the page, so press anywhere once and try again. Also check that the speaker button at the top right isn't muted, the volume in Settings isn't 0, and your device's volume or silent mode.

No. Names, scores and settings stay in your browser on this device. Sound effects are synthesized in the browser as well.