Games like Hornet the Vanguard
Games like Hornet the Vanguard include The Room 4: Old Sins, The Room, The Room Three, No Case Should Remain Unsolved, and Servant of the Lake. We matched them by the tags players give Hornet the Vanguard on Steam (Adventure, Visual Novel, Mystery, Escape Room, and Point & Click): closest matches first, and among equally close ones the better-known games.

The Room 4: Old Sins
Shared: Mystery · Adventure · Point & Click

The Room
Shared: Mystery · Adventure · Point & Click

The Room Three
Shared: Adventure · Mystery · Point & Click

No Case Should Remain Unsolved
Shared: Visual Novel · Adventure · Point & Click

Servant of the Lake
Shared: Adventure · Escape Room · Point & Click

The Room Two
Shared: Mystery · Point & Click · Adventure

Underground Blossom
Shared: Adventure · Escape Room · Point & Click

Rusty Lake Paradise
Shared: Adventure · Point & Click · Mystery

The House of Da Vinci
Shared: Mystery · Hidden Object · Point & Click

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

Sanfu
Shared: Mystery · Adventure · Visual Novel

Urban Myth Dissolution Center
Shared: Visual Novel · Adventure · Mystery

Samsara Room
Shared: Adventure · Point & Click · Escape Room

Cube Escape Collection
Shared: Mystery · Point & Click · Escape Room

The Wolf Among Us
Shared: Adventure · Visual Novel · Choose Your Own Adventure

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

Deponia
Shared: Adventure · Point & Click · 2D

Syberia
Shared: Adventure · Point & Click · Female Protagonist

Boxes: Lost Fragments
Shared: Mystery · Adventure · Point & Click

Syberia 3
Shared: Adventure · Point & Click · Female Protagonist

Danganronpa: Trigger Happy Havoc
Shared: Visual Novel · Mystery · Adventure

The Rewinder
Shared: Adventure · Mystery · Point & Click

The House of Da Vinci 3
Shared: Mystery · Adventure · Hidden Object

The Mr. Rabbit Magic Show
Shared: Adventure · Point & Click · Escape Room