Games like Gordian
Games like Gordian include Hook, LYNE, Mini Metro, klocki, and Opus Magnum. We matched them by the tags players give Gordian on Steam (Simulation, Puzzle, Sandbox, 2D, and Abstract): closest matches first, and among equally close ones the better-known games.

Hook
Shared: Puzzle · Abstract · Minimalist

LYNE
Shared: Puzzle · Minimalist · Logic

Mini Metro
Shared: Puzzle · Simulation · Minimalist

klocki
Shared: Puzzle · Minimalist · Relaxing

Opus Magnum
Shared: Puzzle · Simulation · Logic

Hexcells
Shared: Puzzle · Minimalist · Logic

Zup! S
Shared: Puzzle · 2D · Minimalist

Dorfromantik
Shared: Puzzle · Sandbox · Relaxing

Papers, Please
Shared: Simulation · Puzzle · Indie

Patrick's Parabox
Shared: Puzzle · Abstract · Minimalist

Strange Jigsaws
Shared: Puzzle · 2D · Abstract

Potion Craft: Alchemist Simulator
Shared: Simulation · 2D · Relaxing

Hexcells Infinite
Shared: Puzzle · Minimalist · Logic

People Playground
Shared: Sandbox · 2D · Simulation

Mini Motorways
Shared: Simulation · Puzzle · Minimalist

Baba Is You
Shared: Puzzle · Logic · 2D

Stardew Valley
Shared: Simulation · Sandbox · Relaxing

Antichamber
Shared: Puzzle · Abstract · Indie

LIMBO
Shared: Puzzle · 2D · Atmospheric

Reus
Shared: Simulation · Sandbox · Puzzle

Planet Coaster
Shared: Simulation · Sandbox · Relaxing

鬼谷八荒 Tale of Immortal
Shared: Simulation · Sandbox · Singleplayer

Firework
Shared: Puzzle · 2D · Atmospheric

Cyber Manhunt
Shared: Simulation · Puzzle · Indie