Features unlocked by registration
Comprehension Quizzes
Take 5-question quizzes on each Classified File to test and solidify your understanding.
Badge Collection
Earn badges based on quiz performance. Collect all 6 badge types.
Detective Ranking
Compete with other detectives for top ranking positions.
Profile Customization
Set your nickname, avatar, bio, and SNS links. Build your unique detective profile.
How to register
1
Authenticate with Google
Click "Sign up with Google" and authenticate with your Google account.
2
Set your nickname
Set a nickname on your profile page — this appears in rankings.
3
Take quizzes
Navigate to any Classified File article and take the quiz to earn badges.
Join the agency as a detective
Completely free. No email form required. Just a Google account and you are in.