Games like Agent Walker: Secret Journey
Games like Agent Walker: Secret Journey include The Room, Enigmatis: The Ghosts of Maple Creek, The Room Two, Enigmatis 2: The Mists of Ravenwood, and The Room 4: Old Sins. We matched them by the tags players give Agent Walker: Secret Journey on Steam (Casual, Adventure, Hidden Object, Point & Click, and Female Protagonist): closest matches first, and among equally close ones the better-known games.

The Room
Shared: Point & Click · Puzzle · Adventure

Enigmatis: The Ghosts of Maple Creek
Shared: Adventure · Hidden Object · Casual

The Room Two
Shared: Point & Click · Puzzle · Hidden Object

Enigmatis 2: The Mists of Ravenwood
Shared: Adventure · Hidden Object · Casual

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

Grim Legends: The Forsaken Bride
Shared: Casual · Hidden Object · Point & Click

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

Grim Legends 2: Song of the Dark Swan
Shared: Casual · Hidden Object · Adventure

Abyss: The Wraiths of Eden
Shared: Casual · Hidden Object · Adventure

Eventide: Slavic Fable
Shared: Adventure · Casual · Hidden Object

9 Clues: The Secret of Serpent Creek
Shared: Casual · Hidden Object · Adventure

Enigmatis 3: The Shadow of Karkhala
Shared: Casual · Hidden Object · Adventure

Syberia
Shared: Adventure · Point & Click · Casual

9 Clues 2: The Ward
Shared: Adventure · Casual · Hidden Object

Mind Snares: Alice's Journey
Shared: Casual · Hidden Object · Adventure

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

Frankenstein: Master of Death
Shared: Casual · Hidden Object · Point & Click

Fran Bow
Shared: Point & Click · Adventure · Puzzle

Left in the Dark: No One on Board
Shared: Casual · Hidden Object · Adventure

Grim Legends 3: The Dark City
Shared: Casual · Hidden Object · Adventure

Morphopolis
Shared: Hidden Object · Casual · Puzzle

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

Gorogoa
Shared: Puzzle · Casual · Point & Click

Alchemy Mysteries: Prague Legends
Shared: Casual · Hidden Object · Adventure