Games like The Lost Heir 3: Demon War
Games like The Lost Heir 3: Demon War include Roadwarden, The Life and Suffering of Sir Brante, Suzerain, Choice of Robots, and Sorcery! Parts 1 and 2. We matched them by the tags players give The Lost Heir 3: Demon War on Steam (Indie, RPG, Adventure, Choose Your Own Adventure, and Text-Based): closest matches first, and among equally close ones the better-known games.

Roadwarden
Shared: RPG · Indie · Adventure

The Life and Suffering of Sir Brante
Shared: RPG · Choices Matter · Choose Your Own Adventure

Suzerain
Shared: Choose Your Own Adventure · Choices Matter · RPG

Choice of Robots
Shared: Choose Your Own Adventure · Text-Based · Indie

Sorcery! Parts 1 and 2
Shared: RPG · Indie · Choose Your Own Adventure

Fallen Hero: Rebirth
Shared: Indie · Adventure · RPG

Reigns
Shared: Indie · Choices Matter · Choose Your Own Adventure

Late Shift
Shared: Choose Your Own Adventure · Choices Matter · Indie

Wayhaven Chronicles: Book One
Shared: Indie · RPG · Adventure

Baldur's Gate 3
Shared: RPG · Choices Matter · Adventure

Breakout 13
Shared: Choose Your Own Adventure · Interactive Fiction · Choices Matter

To the Moon
Shared: Indie · Adventure · RPG

WILL: A Wonderful World / WILL:美好世界
Shared: RPG · Adventure · Indie

Yes, Your Grace
Shared: Indie · RPG · Choices Matter

Vampire: The Masquerade — Parliament of Knives
Shared: Indie · RPG · Adventure

Vampire: The Masquerade — Night Road
Shared: Choose Your Own Adventure · Text-Based · RPG

Golden Treasure: The Great Green
Shared: Indie · Adventure · RPG

Zombie Exodus: Safe Haven
Shared: Indie · RPG · Adventure

The Life and Suffering of Sir Brante — Chapter 1&2
Shared: Choose Your Own Adventure · RPG · Interactive Fiction

The Witcher 3: Wild Hunt — Remastered
Shared: RPG · Adventure · Choices Matter

Sabres of Infinity
Shared: RPG · Indie · Adventure

Warhammer 40,000: Rogue Trader
Shared: RPG · Choices Matter · Adventure

Far Away
Shared: Choices Matter · Choose Your Own Adventure · Indie

Tainted Grail: The Fall of Avalon
Shared: RPG · Adventure · Indie