Games like Saturn
Games like Saturn include Disco Elysium - The Final Cut, Cyberpunk 2077, Esoteric Ebb, Detroit: Become Human, and Undertale. We matched them by the tags players give Saturn on Steam (RPG, Isometric, Story Rich, Exploration, and Choices Matter): closest matches first, and among equally close ones the better-known games.

Disco Elysium - The Final Cut
Shared: RPG · Story Rich · Isometric

Cyberpunk 2077
Shared: RPG · Story Rich · Singleplayer

Esoteric Ebb
Shared: RPG · Story Rich · Isometric

Detroit: Become Human
Shared: Story Rich · Choices Matter · Singleplayer

Undertale
Shared: Story Rich · Choices Matter · RPG

The Witcher 3: Wild Hunt — Remastered
Shared: RPG · Story Rich · Singleplayer

Mass Effect™ Legendary Edition
Shared: RPG · Story Rich · Choices Matter

The Thaumaturge
Shared: RPG · Isometric · Story Rich

STAR WARS™ Knights of the Old Republic™
Shared: RPG · Story Rich · Singleplayer

Pillars of Eternity II: Deadfire
Shared: RPG · Isometric · Story Rich

Fallout: New Vegas
Shared: RPG · Story Rich · Exploration

Baldur's Gate 3
Shared: RPG · Story Rich · Choices Matter

Pillars of Eternity
Shared: RPG · Isometric · Story Rich

Fallout 4
Shared: RPG · Exploration · Singleplayer

Shadowrun Returns
Shared: RPG · Isometric · Singleplayer

STAR WARS™ Knights of the Old Republic™ II - The Sith Lords™
Shared: RPG · Story Rich · Choices Matter

Tyranny
Shared: RPG · Story Rich · Isometric

Starfield
Shared: RPG · Exploration · Singleplayer

Shadowrun: Dragonfall - Director's Cut
Shared: RPG · Isometric · Story Rich

OneShot
Shared: Story Rich · Choices Matter · Singleplayer

Torment: Tides of Numenera
Shared: RPG · Isometric · Story Rich

Pathfinder: Kingmaker - Enhanced Plus Edition
Shared: RPG · Isometric · Choices Matter

Deus Ex: Mankind Divided
Shared: RPG · Story Rich · Sci-fi

Encased: A Sci-Fi Post-Apocalyptic RPG
Shared: RPG · Isometric · Exploration