Games like The Terrible Old Man
Games like The Terrible Old Man include Sally Face - Episode One, Dagon: by H. P. Lovecraft, Firework, The Room Two, and Tiny Bunny. We matched them by the tags players give The Terrible Old Man on Steam (Lovecraftian, Horror, Point & Click, Interactive Fiction, and 2D): closest matches first, and among equally close ones the better-known games.

Sally Face - Episode One
Shared: Horror · Story Rich · Point & Click

Dagon: by H. P. Lovecraft
Shared: Lovecraftian · Horror · Story Rich

Firework
Shared: Horror · 2D · Mystery

The Room Two
Shared: Point & Click · Horror · Lovecraftian

Tiny Bunny
Shared: Horror · Story Rich · Atmospheric

Fran Bow
Shared: Point & Click · Horror · Story Rich

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

Rusty Lake Paradise
Shared: Point & Click · Horror · 2D

Unheard - Voices of Crime
Shared: Thriller · Story Rich · Crime

The Room 4: Old Sins
Shared: Point & Click · Lovecraftian · Horror

Cube Escape Collection
Shared: Point & Click · Horror · Story Rich

The Room
Shared: Point & Click · Horror · Mystery

Servant of the Lake
Shared: Point & Click · Story Rich · Horror

The Excavation of Hob's Barrow
Shared: Point & Click · Horror · Interactive Fiction

Little Misfortune
Shared: Point & Click · Horror · Story Rich

The Case of the Golden Idol
Shared: Point & Click · Story Rich · 2D

Gorogoa
Shared: Hand-drawn · Point & Click · Atmospheric

Mouthwashing
Shared: Horror · Story Rich · Atmospheric

Detention
Shared: Horror · Story Rich · Point & Click

SOMA
Shared: Horror · Story Rich · Atmospheric

Samsara Room
Shared: Point & Click · Horror · Adventure

Amnesia: A Machine For Pigs
Shared: Horror · Story Rich · Interactive Fiction

Firewatch
Shared: Story Rich · Atmospheric · Adventure

DISTRAINT: Deluxe Edition
Shared: Horror · 2D · Story Rich