Case Closed: The Detective Game Where Right Answers Find the Clues
Something has gone missing in the city and five suspects were nearby. Search places, answer questions from your notes to collect clue cards, cross off suspects and name the thief.
About Case Closed
Case Closed is a detective game built from your own study notes. Something cute has gone missing in the city, like the museum's Golden Cupcake Trophy or Pepper the Parrot from the zoo, and five animal suspects were seen nearby. Your job is to find out which one took it.
Tap a place on the city map, then tap things in that place to inspect them: a bench, a cake stand, a pile of crates. Every inspection asks a multiple-choice question from your notes. A right answer gives a sharp clue card, like "the thief wears a top hat" or "the thief has no scarf". Clues are pictures with a green check or a red cross, so there is very little to read besides your study question.
A wrong answer is never a dead end. The right answer is shown, you can ask for an explanation, and you still get a smudged clue that clears one suspect. Tap a smudged clue in your notebook to look again with a new question and make it sharp. Questions you missed also come back a few questions later.
Your notebook shows every suspect with their hat, coat color, held item, glasses and scarf. Tap a clue to light up the matching trait on each suspect, and tap suspects to cross them off. When every place is searched, name the thief. A wrong guess shows the clue that clears that suspect, and you guess again. The right guess starts a chase and an arrest.
Each case ends with up to three stars: one for closing the case, one for naming the thief on the first try and one for a sharp eye, when most of your clues were sharp. Every case is generated fresh, with new suspects, places and clues, and it always has exactly one answer.
Who It's For
Students who like puzzles and mysteries and want review that feels like detective work instead of a worksheet, at their own pace.
Study Set Ideas
Vocabulary and definitions
Short questions keep each inspection quick, so one case covers ten or more terms.
Review before a test
Missed questions come back, and the end screen lists every question you still need to learn.
Slow readers and younger students
Nothing is timed, and the clues are pictures, so the only reading is the study question itself.
Any subject you upload
The mystery and the rules stay the same, only the questions change, so any material works.
How to Play Case Closed
Right answers give sharp clues, wrong answers give smudged ones
Clues are pictures: a top hat, a red coat, an umbrella
Cross off suspects in your notebook, then name the thief
Questions are never timed, and every case is different
What You'll Learn
Active Recall
Every question forces your brain to actively retrieve information, strengthening neural pathways and long-term memory.
Instant Feedback
Know immediately whether your answer was correct. AI explains the right answer when you get it wrong, turning mistakes into learning moments.
Gamified Motivation
Points, streaks, and progression systems keep you engaged longer than traditional studying. You study more because it feels like play.
Any Subject
Upload any study material: biology, history, math, language learning, exam prep. If it's in your notes, it becomes a game.
Game Details
Ready to Play Case Closed?
Upload your study notes, let AI generate questions, and start playing in under 2 minutes. Works with any subject.
No credit card required · Free forever plan available
