We do ultimately learn who committed the crimes. But that's not what audiences will remember after leaving the theater.
Aside from the TV anime series and films, Detective Conan has over 23 games to its name. Unfortunately, most of them are limited to Japan, and just a few are available in other parts of the world.
Meanwhile, “Detective Conan: The Escape--Prologue of Black Iron” is an escape game in which participants are directed to solve puzzles littered around the venue.