Detective stories where "all the clues are there", the player's goal is to guess the solution, and it's possible to identify the culprit before the final reveal. Suggestions welcome.
Antony & Cleopatra: Case IV: The Murder of Marlon Brando
Banshee's Last Cry
Different port of Kamaitachi no Yoru, but enough differences to list separately.
The Case of the Serialized Killer
The Centennial Case: A Shijima Story
Color the Truth
Alternate Jake Hunter: DAEDALUS The Awakening of Golden Jazz
Danganronpa Trilogy
Deadline
Erstwhile
Ghost Trick: Phantom Detective
The Great Ace Attorney Chronicles
Jake Hunter Detective Story: Ghost of the Dusk
Title case specifically.
Kamaitachi no Yoru: Rinne Saisei
Layton's Mystery Journey: Katrielle and the Millionaire's Conspiracy
Layton Brothers: Mystery Room
Lunium
Paradise Killer
There's one element of the solution that doesn't 100% play fair (IYKYK), but for the most part it does.
The Portopia Serial Murder Case
Toby's Nose
Umineko no Naku Koro ni
Umineko is metafiction in which the characters argue over whether it is a fair-play mystery or a fantasy story, but per that premise, the murders are in fact compliant with whodunnit genre rules.