Games like Norman's Great Illusion
Games like Norman's Great Illusion include OneShot, Papers, Please, The Test, Beholder, and Undertale. We matched them by the tags players give Norman's Great Illusion on Steam (Indie, Political Sim, Simulation, Adventure, and Pixel Graphics): closest matches first, and among equally close ones the better-known games.

OneShot
Shared: Indie · Pixel Graphics · Story Rich

Papers, Please
Shared: Indie · Simulation · Pixel Graphics

The Test
Shared: Simulation · Pixel Graphics · Story Rich

Beholder
Shared: Political Sim · Atmospheric · Choices Matter

Undertale
Shared: Story Rich · Pixel Graphics · Indie

Beholder Conductor
Shared: Political Sim · Indie · Simulation

Emily is Away Too
Shared: Indie · Simulation · Pixel Graphics

To the Moon
Shared: Indie · Story Rich · Pixel Graphics

Orwell: Keeping an Eye On You
Shared: Simulation · Political Sim · Indie

Roadwarden
Shared: Indie · Adventure · Pixel Graphics

Beholder 2
Shared: Simulation · Political Sim · Choices Matter

The Witcher 3: Wild Hunt — Remastered
Shared: Adventure · Atmospheric · Story Rich

OMORI
Shared: Indie · Pixel Graphics · Story Rich

Not For Broadcast
Shared: Adventure · Simulation · Choices Matter

The Red Strings Club
Shared: Pixel Graphics · Indie · Story Rich

Coffee Talk
Shared: Pixel Graphics · Atmospheric · Story Rich

Suzerain
Shared: Political Sim · Story Rich · Choices Matter

Detroit: Become Human
Shared: Story Rich · Choices Matter · Multiple Endings

Martial Law
Shared: Pixel Graphics · Indie · Atmospheric

A Bird Story
Shared: Indie · Pixel Graphics · Story Rich

The Life and Suffering of Sir Brante
Shared: Story Rich · Indie · Choices Matter

Orwell: Ignorance is Strength
Shared: Political Sim · Simulation · Indie

Finding Paradise
Shared: Adventure · Pixel Graphics · Story Rich

Firewatch
Shared: Adventure · Atmospheric · Story Rich