Teacher plan: trial, pricing, class sessions, students and data.
Two plans: €9.99 per month with no commitment, or €79 per year with a 14-day free trial. For the trial, a card is required at sign-up and the charge goes through when the 14 days end unless you cancel. Both plans open exactly the same features and can be cancelled at any time from your account.
Yes, and without creating an account. On this page, the button “Test the investigation your students will play” sets everything up for you: a guest session, correction turned on, then the first free investigation in the language of the page. You play the real game, with the real corrections, exactly what your students will experience. The subscription then opens every investigation, including the paid episodes, plus class sessions: the code to share, the tracking board and the language you set for the whole class.
From your account: open the menu (your avatar), Subscription section, then “Manage my subscription”. You land on your Stripe billing space, where cancellation takes one click. During the trial, cancel before day 14 and nothing is charged. Afterwards, you keep access until the end of the period already paid.
From about age 10, as soon as they read and write comfortably. In a foreign language, the real criterion is the level: count on A2 in the session language to follow the investigation and ask simple questions, B1 to get the most out of it, B2 to spot the contradictions between statements. Below A2, free writing remains too demanding. The correction itself adapts to what each student writes, whatever their level.
Each student scans the QR code or opens the link, picks a nickname and enters the investigation. Students chat in writing with the story's characters: they ask their questions freely, in the session language, and the suspects answer while staying in character. Every message is corrected as the conversation goes (spelling, grammar, conjugation, clarity) and the correction stays visible in the bubble. The goal: cross-check the testimonies and accuse the right suspect before the end of the lesson.
Two ways: project the QR code for them to scan, or share the session link by copy-pasting it (school platform, Teams, email). Both lead to the same page: the student picks a nickname and plays, no account, nothing to install.
None. Students play without accounts, under a first name or nickname they choose. The session board is visible to you alone and session data is deleted automatically.
Up to 40, each on their own device, in the browser, with nothing to install.
The game exists in seven languages: French, English, German, Spanish, Italian, Dutch and Portuguese. You choose the interrogation language when creating the session, whatever the language of your students' screens, and you can change it from one session to the next.
Outdoor investigations in your city
Turn your city into an investigation ground: follow the clues from street to street.
Play outdoors
Do you teach a language?
A turnkey lesson: your students question the suspects, every message comes back corrected, and you follow the whole class live.
See the teacher offer