Games like The Fifth Horseman
Games like The Fifth Horseman include Suzerain, The Life and Suffering of Sir Brante, Roadwarden, Far Away, and Love Is All Around. We matched them by the tags players give The Fifth Horseman on Steam (RPG, Indie, Adventure, Visual Novel, and Choose Your Own Adventure): closest matches first, and among equally close ones the better-known games.

Suzerain
Shared: Visual Novel · Choose Your Own Adventure · Choices Matter

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

Roadwarden
Shared: RPG · Adventure · Indie

Far Away
Shared: Visual Novel · Choices Matter · Choose Your Own Adventure

Love Is All Around
Shared: Visual Novel · Singleplayer · Multiple Endings

The Wolf Among Us
Shared: Adventure · Choose Your Own Adventure · Choices Matter

Road to Empress I
Shared: RPG · Choices Matter · Visual Novel

Emily is Away <3
Shared: Indie · Choices Matter · Multiple Endings

The Test
Shared: Choose Your Own Adventure · Multiple Endings · Visual Novel

Mirror 2: Project X
Shared: Visual Novel · RPG · Interactive Fiction

Soul Gambler
Shared: Indie · Adventure · RPG

Emily is Away Too
Shared: Indie · Choices Matter · Multiple Endings

Otaku's Adventure
Shared: Indie · RPG · Visual Novel

The Hungry Lamb: Traveling in the Late Ming Dynasty
Shared: Visual Novel · Multiple Endings · Adventure

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

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

Undertale
Shared: RPG · Choices Matter · Multiple Endings

Volcano Princess
Shared: RPG · Choices Matter · Multiple Endings

LoveChoice
Shared: Visual Novel · Choices Matter · Multiple Endings

Aliya: Timelink
Shared: RPG · Visual Novel · Interactive Fiction

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

他人世界末 On-looker
Shared: Visual Novel · RPG · Indie

The Henry Stickmin Collection
Shared: Choose Your Own Adventure · Multiple Endings · Choices Matter

Reigns
Shared: Indie · Choices Matter · RPG