Open source Strategy games for macOS

0 A.D.

0 A.D. is a cross-platform real-time strategy game of ancient warfare. In short, it is a historically-based war/economy game that allows players to relive or rewrite the history of Western civilizations, focusing on the years between 500 B.C. and 500 A.D. (GPL)

Linux - Windows - macOS

Freeciv

Freeciv is a Free and Open Source empire-building strategy game inspired by the history of human civilization. The game commences in prehistory and your mission is to lead your tribe from the stone age to the space age. (GPL)

Linux - FreeBSD - Windows - macOS

FreeCol

FreeCol is a turn-based strategy game based on the old game Colonization, and similar to Civilization. (GPL)

Cross-platform

FreeOrion

FreeOrion is a great, open-source, space-set, turn based strategy game. (GPL)

Linux - macOS - Windows

Globulation 2

Globulation 2 is an innovative Real-Time Strategy (RTS) game which reduces micro-management by automatically assigning tasks to units. (GPL)

Linux - FreeBSD - Windows - macOS

Scorched 3D

Scorched 3D is a game based loosely (or actually quite heavily now) on the classic DOS game Scorched Earth "The Mother Of All Games". (GPL)

Linux - FreeBSD - Windows - macOS

Warzone 2100

Warzone 2100 is a real-time strategy game, originally developed by Pumpkin Studios (Archived website) and published by Eidos-Interactive. (GPL)

Linux - macOS - Windows

Widelands

Widelands is a slow-paced real-time strategy free computer game under the GPL. (GPL)

Linux - FreeBSD - Windows - macOS

8 applications