Games like EcoGnomix
Games like EcoGnomix include Cities: Skylines, Mewgenics, Against the Storm, Into the Breach, and Manor Lords. We matched them by the tags players give EcoGnomix on Steam (Roguelite, Turn-Based Combat, City Builder, Strategy, and Turn-Based Strategy): closest matches first, and among equally close ones the better-known games.

Cities: Skylines
Shared: City Builder · Strategy · Building

Mewgenics
Shared: Roguelite · Turn-Based Combat · Turn-Based Strategy

Against the Storm
Shared: Strategy · City Builder · Building

Into the Breach
Shared: Strategy · Turn-Based Strategy · Roguelite

Manor Lords
Shared: City Builder · Strategy · Base Building

The Last Spell
Shared: Strategy · Turn-Based Strategy · Turn-Based Combat

Prison Architect
Shared: Building · Strategy · City Builder

Workers & Resources: Soviet Republic
Shared: City Builder · Strategy · Building

Jagged Alliance 3
Shared: Strategy · Turn-Based Combat · Turn-Based Strategy

Sid Meier’s Civilization® VI
Shared: Strategy · Turn-Based Strategy · City Builder

Hades
Shared: Roguelite · Action Roguelike · Indie

Cities: Skylines II
Shared: City Builder · Building · Strategy

STAR WARS Zero Company™
Shared: Turn-Based Strategy · Turn-Based Combat · Strategy

Megabonk
Shared: Roguelite · Action Roguelike · Loot

Warriors of the Nile
Shared: Turn-Based Combat · Roguelite · Strategy

Farthest Frontier
Shared: City Builder · Strategy · Building

Monster Train
Shared: Roguelite · Turn-Based Strategy · Strategy

Frostpunk
Shared: City Builder · Strategy · Building

XCOM 2
Shared: Turn-Based Combat · Strategy · Turn-Based Tactics

Dwarf Fortress
Shared: Strategy · City Builder · Base Building

Empires of the Undergrowth
Shared: Strategy · City Builder · Base Building

Battle Brothers
Shared: Strategy · Turn-Based Strategy · Turn-Based Combat

Legends of Kingdom Rush
Shared: Turn-Based Combat · Roguelite · Turn-Based Strategy

The Lost Village
Shared: Roguelite · City Builder · Base Building