Games like Detective School Club
Games like Detective School Club include No Case Should Remain Unsolved, There Is No Game: Wrong Dimension, Storyteller, Vampires' Melody, and Phoenix Wright: Ace Attorney Trilogy. We matched them by the tags players give Detective School Club on Steam (Adventure, Point & Click, Interactive Fiction, Visual Novel, and Puzzle): closest matches first, and among equally close ones the better-known games.

No Case Should Remain Unsolved
Shared: Interactive Fiction · Point & Click · Puzzle

There Is No Game: Wrong Dimension
Shared: Point & Click · Adventure · Puzzle

Storyteller
Shared: Point & Click · Interactive Fiction · Adventure

Vampires' Melody
Shared: Adventure · Visual Novel · Interactive Fiction

Phoenix Wright: Ace Attorney Trilogy
Shared: Visual Novel · Adventure · Puzzle

The Mermaid Mask
Shared: Adventure · Point & Click · Interactive Fiction

Chants of Sennaar
Shared: Adventure · Puzzle · Point & Click

Otaku's Adventure
Shared: Visual Novel · Adventure · Dating Sim

Hookah Haze
Shared: Adventure · Point & Click · Visual Novel

Her Story
Shared: Interactive Fiction · Puzzle · Choose Your Own Adventure

Return to Monkey Island
Shared: Adventure · Point & Click · Puzzle

The Hungry Lamb: Traveling in the Late Ming Dynasty
Shared: Visual Novel · Interactive Fiction · Adventure

Rewrite+
Shared: Adventure · Visual Novel · Interactive Fiction

Deponia
Shared: Adventure · Point & Click · Puzzle

Refind Self: The Personality Test Game
Shared: Interactive Fiction · Adventure · Visual Novel

Suzerain
Shared: Visual Novel · Interactive Fiction · Choose Your Own Adventure

Hooked on You: A Dead by Daylight Dating Sim™
Shared: Visual Novel · Dating Sim · Choose Your Own Adventure

Lay a Beauty to Rest: The Darkness Peach Blossom Spring
Shared: Adventure · Visual Novel · Interactive Fiction

Suicide Countdown: 7 Days
Shared: Adventure · Interactive Fiction · Visual Novel

Sanfu
Shared: Adventure · Puzzle · Visual Novel

Gorogoa
Shared: Puzzle · Point & Click · Adventure

Fate/hollow ataraxia REMASTERED
Shared: Adventure · Point & Click · Visual Novel

Tangle Tower
Shared: Point & Click · Puzzle · Visual Novel

Florence
Shared: Adventure · Interactive Fiction · Visual Novel