Games like The Daring Mermaid Expedition
Games like The Daring Mermaid Expedition include Roadwarden, The Life and Suffering of Sir Brante, Choice of Robots, Suzerain, and The Life and Suffering of Sir Brante — Chapter 1&2. We matched them by the tags players give The Daring Mermaid Expedition on Steam (RPG, Indie, Choose Your Own Adventure, Text-Based, and Interactive Fiction): closest matches first, and among equally close ones the better-known games.

Roadwarden
Shared: RPG · Indie · Text-Based

The Life and Suffering of Sir Brante
Shared: RPG · Choose Your Own Adventure · Interactive Fiction

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

Suzerain
Shared: Choose Your Own Adventure · Interactive Fiction · RPG

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

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

Heroes Rise: The Prodigy
Shared: RPG · Choose Your Own Adventure · Indie

Fallen Hero: Rebirth
Shared: Indie · RPG · Text-Based

Choice of the Deathless
Shared: RPG · Choose Your Own Adventure · Indie

Wayhaven Chronicles: Book One
Shared: RPG · Indie · Text-Based

Tin Star
Shared: RPG · Indie · Choose Your Own Adventure

Aliya: Timelink
Shared: RPG · Interactive Fiction · Text-Based

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

Community College Hero: Trial by Fire
Shared: RPG · Indie · Choose Your Own Adventure

Citizen Sleeper
Shared: RPG · Interactive Fiction · Indie

Vampire: The Masquerade — Parliament of Knives
Shared: RPG · Indie · Text-Based

Breakout 13
Shared: Choose Your Own Adventure · Interactive Fiction · RPG

To the Moon
Shared: Indie · RPG · Interactive Fiction

Zombie Exodus: Safe Haven
Shared: RPG · Indie · Text-Based

Fabled Lands
Shared: RPG · Choose Your Own Adventure · Interactive Fiction

Zombie Exodus
Shared: RPG · Indie · Text-Based

VERSUS: The Lost Ones
Shared: RPG · Indie · Choose Your Own Adventure

Heroes Rise: The Hero Project
Shared: RPG · Indie · Choose Your Own Adventure

MetaHuman Inc.
Shared: RPG · Indie · Choose Your Own Adventure