Example result: Target 11 s, your time 10.70 s: error 0.30 s. After three trials, the lowest total wins. You can practice first without affecting the leaderboard.

In new rooms, the creator can start only after at least one other competitor has completed every trial without cancellation. Share the link: opening it or joining the room is not enough. This rule prevents trying several rooms alone and sharing only the best result.

The loser… is on the hook!

Coffee, breakfast, or your own idea: choose your challenge’s forfeit.

All forfeitsOptional forfeit (coffee, breakfast, etc., or your own choice)

Forfeit rulesTap to open or close the details

If the organizer chooses a forfeit, you must accept it to participate. The challenge rules determine who pays. Canceled games do not assign forfeits.

Registered players who do not answer are outside the competition at closure and labelled the REAL last-place loser. Players who start without finishing are listed separately.

NicknameUse a name or nickname that people in your group recognize. In prediction games, they need to know who you are to answer about you.Competing playersSet the maximum number of players. If you only organize, your spot is additional.

Your role in the groupTap to open or close the details

Your roleInvite friends and manage the game. If you only organize, you do not answer, vote or earn points. Your role stays the same for this room.

Group names (optional)Tap to open or close the details

For a regular or recurring group, prepare a list of participants. People who have not joined remain listed as absent: they do not count toward the quorum and do not receive coffee.

List only the other participants. Do not add your own name: as the room creator, you are already included with your chosen nickname if you play. Adding another name for yourself would leave it incorrectly listed as someone still expected to join.

Participant namesOne name per line, 2–24 characters. Up to 10 people, including the creator if playing. Registered names remain linked to their participants.

Where will you send the room link?The message will invite the whole group or address one person. You can change this choice before sharing.Room name (optional)Leave blank to use the game name.

Automatic closing

The duration starts when the room is created. You can choose an exact date and time instead. A recurring challenge uses its calendar closing time. The server closes automatically; the organizer does not need to act. Incomplete attempts receive no forfeit. This is the latest closing time: if all expected players finish every stage sooner, the result appears immediately. Any pending answer reviews keep the ranking provisional. In recurring challenges, only the current round ends; the next follows the schedule.

Maximum room durationOr choose a closing date and time (optional)

Choose the rules and forfeit, create and open the room, then share the invitation. The link appears only once the room is open.

You can prepare your contribution right away. Others join during collection; comparison needs at least 2 participants. A player can also choose the topic, word or starting voice. Public Jury needs two contenders.

How to playTap to open or close the details

Three different trials. The smallest total timing error wins. Everyone in the same challenge gets the same trials, timings, and distractions.

Private data for 7 days · no sign-up to play

Data and privacyTap to open or close the details

Describe the scene and its funny details: “A colleague leaves two drops of milk in the carton” is fine. Leave out names, contact details, and precise references such as the company and department: a reader might know the person.

To contribute, we use ChatGPT sign-in and store an account fingerprint, not your email, with text, reactions and reports. New public contributions do not collect a nickname. Published text stays until deletion; hidden text or text awaiting checks is removed after 30 days from creation during cleanup. Drafts blocked before publication are not saved on the server. Checks run within this service, without sending text to external AI services.

One-time games: Nicknames, answers, stories and votes are stored in the room for 7 days. Participants see final results. A technical key is kept in your browser to recover your place: keep using this device. Games are never automatically published on the board. In Guess who we also store the secret solution and the protagonist’s reply; a rematch replaces the previous round without extending the room expiration. Submitted answers remain on record. If the organizer cancels the room, everyone’s submitted results will be visible to anyone with the link for 24 hours. Your browser also remembers your last nickname to prefill future entries.

Choices, imaginary prices, predictions and start times stay in the room until expiration. Partial results are visible to members and update automatically. The secret price is revealed after your own guess. Public links contain no answers or names. A new round replaces answers without extending expiration. If interrupted, answers awaiting submission are kept temporarily in this browser tab until saving is confirmed or the game expires.

Use your own photos of objects, clothes or food, without people, faces, names or identifying details. Roast the choice: no threats or personal attacks. The room is private; anyone with the invitation can join while entries are collected, before voting.

Choices, sharing preferences and reasons stay in the room until its seven-day expiry. Each sharing box starts unchecked: only authorized choices appear with your nickname in the final comparison. Counts and points may reveal other choices, especially with two players. Public cards contain no names or personal answers.

Arguments become readable in the voting phase, after submissions close. External sharing includes only authorized text, without nicknames. Cards and images are created on the device.

CalcuPop keeps the mission, language, timer, success claim and optional response for the room’s lifetime, up to seven days without extension. Other missions appear only when the round ends. A new round replaces the data and revokes old response links. It does not read WhatsApp or other chats or receive screenshots: cropping, covering and cards happen on your device. Response links do not verify identity and screenshots are not automatic certification. Conversations are never published automatically.

60-Second Fury requests microphone access. Before submission, recordings stay on your device. Sending shares your voice and sound estimates with the private room’s players and organizer, without a public archive or AI analysis. Recordings load only on request; public cards are generated on your device and contain no voices or names.

Sentences stay in the private room, accessed by invitation and personal key, for up to 7 days. A new round erases earlier stories and votes. No access to keyboard data, clipboard or other apps; no screenshot is requested or stored. Sharing your own copy elsewhere is optional.

Answers stay on this page and disappear when you close or reload it. For 30 days, your device keeps only a reminder of questions and endings already shown, to vary the rounds. No names are requested; no answers or cards are sent to the server. Sharing happens only when you choose it.

The microphone starts only when requested. Reversal happens on your device; only one five-second clip per person and round is sent to the room. Private access within 24 hours, no public feed. Copies already downloaded or shared cannot be withdrawn.

The challenge stores scored timings and results in the room. Practice tests stay on your device. Previous games retain texts already submitted.

For 2–10 players. Open the link and complete four questions whenever you can; others need not be online. Everyone gets the same objects and answers. Each correct answer earns one point: your result shows how many you got right out of 4. Wrong answers and passes earn zero. There is no writing stage. Resume unanswered questions, but submitted answers cannot change. Answers and rankings appear when all expected places have finished, at the scheduled closing time, or when the organizer closes the challenge. Unfinished attempts receive no ranking or forfeit. Fewer than two complete attempts means no forfeit.

Cleanup is triggered by later requests, at most every five minutes, in small batches. Expired data may therefore await physical removal.

Data and privacy