Games like Major's Heart
Games like Major's Heart include The Case of the Golden Idol, No Case Should Remain Unsolved, The Roottrees are Dead, Murders on the Yangtze River, and The Mermaid Mask. We matched them by the tags players give Major's Heart on Steam (Adventure, Interactive Fiction, Point & Click, Puzzle, and 2D): closest matches first, and among equally close ones the better-known games.

The Case of the Golden Idol
Shared: Puzzle · Detective · Point & Click

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

The Roottrees are Dead
Shared: Puzzle · Point & Click · Detective

Murders on the Yangtze River
Shared: Adventure · Puzzle · Detective

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

The White Door
Shared: Adventure · Point & Click · Puzzle

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

The Rewinder
Shared: Adventure · Puzzle · Mystery

Storyteller
Shared: Interactive Fiction · Point & Click · Puzzle

Strange Horticulture
Shared: Puzzle · Mystery · Point & Click

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

Sherlock Holmes: Crimes and Punishments
Shared: Adventure · Detective · Puzzle

Tangle Tower
Shared: Point & Click · Puzzle · Detective

Servant of the Lake
Shared: Adventure · Puzzle · Point & Click

Phoenix Wright: Ace Attorney Trilogy
Shared: Detective · Mystery · Adventure

Sherlock Holmes: The Devil's Daughter
Shared: Adventure · Detective · Puzzle

Desktop Explorer
Shared: Point & Click · Puzzle · Detective

The Silent Age
Shared: Adventure · Point & Click · Puzzle

Sally Face - Episode One
Shared: Adventure · Puzzle · Point & Click

The Rise of the Golden Idol
Shared: Adventure · Puzzle · Detective

Her Story
Shared: Interactive Fiction · Investigation · Puzzle

Kathy Rain 2: Soothsayer
Shared: Point & Click · Investigation · 2D

Duck Detective: The Secret Salami
Shared: Adventure · Detective · Investigation

Confidential Killings - A Detective Game
Shared: Adventure · Puzzle · Detective