This game is a collection of 55 very short stories, each of which has a quiz at the end. In hard mode, you have to type the answer; in easy mode, you have to select from a list of choices.
They're organized in groups of 10, with 5 bonus questions at the end. Some segments parody famous mystery characters like Encyclopedia Brown or the old Clue books.
The level of difficulty for most mysteries is incredibly low. Some mysteries are literally like 'Mr A, Ms B, Mr C and Ms D walk into a bar. Who walks in next?'
=Mr E
=Mr F
=Mr G
=Mr H
I can only assume that the target audience is fourth grade or younger. I remember reading much more complex mysteries in sixth grade, so it can't be that old.
The writing has a selection of jokes but is overall fairly non-descriptive. It is polished. The interactivity is relatively low, and I didn't feel strong emotion from reading the stories.