Games like Fibonex
Games like Fibonex include Prison Architect, Mindustry, shapez 2 - Factory, Factorio, and Oxygen Not Included. We matched them by the tags players give Fibonex on Steam (Simulation, Strategy, Puzzle, Tower Defense, and 2D): closest matches first, and among equally close ones the better-known games.

Prison Architect
Shared: Simulation · Strategy · Building

Mindustry
Shared: Tower Defense · Strategy · Automation

shapez 2 - Factory
Shared: Strategy · Simulation · Puzzle

Factorio
Shared: Strategy · Automation · Base Building

Oxygen Not Included
Shared: Building · Simulation · Base Building

shapez
Shared: Strategy · Automation · Base Building

Dyson Sphere Program
Shared: Simulation · Automation · Building

Bridge Constructor Portal
Shared: Simulation · Puzzle · Strategy

Mini Motorways
Shared: Simulation · Strategy · Puzzle

Manor Lords
Shared: Strategy · Simulation · Base Building

Cities: Skylines
Shared: Simulation · Strategy · Building

Captain of Industry
Shared: Simulation · Strategy · Automation

Mini Metro
Shared: Strategy · Puzzle · Simulation

Against the Storm
Shared: Simulation · Strategy · Building

Plants vs. Zombies GOTY Edition
Shared: Strategy · Tower Defense · 2D

Airport CEO
Shared: Simulation · Strategy · Building

Creeper World 3: Arc Eternal
Shared: Strategy · Tower Defense · Simulation

Production Line : Car factory simulation
Shared: Simulation · Strategy · Building

Dungeon Warfare
Shared: Strategy · Tower Defense · 2D

RimWorld
Shared: Strategy · Simulation · Base Building

Kingdom Two Crowns
Shared: Tower Defense · Strategy · Building

Workers & Resources: Soviet Republic
Shared: Strategy · Simulation · Building

Cliff Empire
Shared: Strategy · Simulation · Futuristic

The Escapists
Shared: Strategy · Simulation · 2D