Mystery XI

Mystery XI

Terms of Use

Last updated: 1 November 2026

These terms apply when you use the Mystery XI app. The app is offered by Foreningskompasset, CVR 46741242, Æbeløgade 5, 3, 3, 8000 Aarhus C, Denmark ("we"). Contact: foreningskompasset@gmail.com.

By using the app, you accept these terms. If you download it from the App Store, Apple's standard licence agreement also applies.

1. The app

Mystery XI is a free football quiz with daily puzzles, practice games and a friends league. You must be at least 13 to use it.

2. Your account

3. Fair play

Don't cheat, use bots or scripts, try to get around the ads, or try to access other players' data or our servers. We may delete results or accounts that do.

4. Ads

The free app shows ads. Tips can be unlocked by watching an ad. See the Privacy Policy for how ads use data.

5. Mystery XI Plus

6. Football content

Puzzles are based on public football facts (players, line-ups, transfers). We try to keep them correct, but mistakes can happen, and transfer fees are estimates, rounded and shown in euros. Mystery XI is not affiliated with or endorsed by any league, club or player. Names of clubs, leagues and players belong to their owners.

7. Our rights

The app, its design, texts and code belong to us. You may use the app for your own, non-commercial use.

8. Availability and liability

We work to keep the app running, but can't promise it will always be available or free of errors, and we may change or end features. To the extent Danish law allows, we are not liable for indirect losses, such as lost streaks or results. Your mandatory rights as a consumer are not affected.

9. Changes and ending

We may update these terms; important changes are shown in the app. You can stop using the app and delete your account at any time.

10. Law and complaints

Danish law applies, without limiting the mandatory consumer rules of the country where you live. Contact us first at foreningskompasset@gmail.com. Consumers in Denmark can also complain to Nævnenes Hus (naevneneshus.dk).