Stop the Timer

Challenge a Friend to Stop the Timer

TARGET--.--s
Players
2
Target time

Every round rolls a fresh random target inside this range.

More options — mode, bonus, rounds ↓

Game mode

Exact-hit bonus

With the bonus on, stopping the clock exactly on the target (to the hundredth, like 5.00) makes the round worth 2 points instead of 1.

Rounds

With a round limit, the game ends after the last round and crowns an overall winner by wins.

How to play

  1. Pick a target range. Every round rolls a surprise target from your range — anywhere from 0.1s up to 3, 10 or 15 seconds, or a custom range you set yourself.
  2. Start the timer. The clock hides the moment it starts — count in your head. In solo practice you can also keep the clock visible.
  3. Stop when you think it's time. The display reveals your exact time and how far off you were.
  4. Closest player wins the round and gets 1 point — or 2 points for stopping exactly on the target, if the exact-hit bonus is on. After the final round, the player with the most points takes the game.
← Back to the main game
Round 1 Runner

This round
PlayerStatus
Scoreboard — points
PlayerPoints
Code Round 1 of 5
Solo practice
TARGET10.00s

The clock shows for 3 seconds, then goes dark — keep counting. Space bar / Enter works too.

Your stats
Best (closest)—
Perfect streak0
Rounds played0

What Is Challenge a Friend?

Challenge a Friend is the online multiplayer mode. You create a challenge, share a 4-letter code or a direct link, and anyone who joins shows up in your lobby. When everyone's in, you start the game — every player stops the same hidden target from their own device. The closest stop wins the round.

No accounts, no downloads. The challenge exists for the duration of the game. It's built for groups of friends who aren't in the same room, classrooms doing a quick timing exercise, or anyone who wants to settle a debate about whose sense of time is best.

How to Challenge a Friend

  1. Select Online · Friends from the mode panel.
  2. Enter your name and press Create challenge. A 4-letter code appears.
  3. Share the code or the invite link — your friend opens the site, enters the code, and joins.
  4. When everyone is in, the host presses Start game.
  5. Each player stops the hidden timer on their own device. Results appear in real time on the scoreboard.

Challenge a Friend FAQ

Does my friend need an account to join?

No. They just need the code or the invite link. No account, no sign-up, no app needed on any device.

How many people can join one challenge?

Up to 12 players can join a single online challenge. For groups larger than that, use Pass & Play on one device instead.

What if a player's internet connection is slow?

The lobby shows each player's ping. A high ping doesn't directly affect timing accuracy (you stop the timer locally), but it may slightly delay the round results appearing.