Strategy Game GitHub Repositories (2026) · Open Source Tools

OpenZ: the faithful open-source 3D fan remake of Z (The Bitmap Brothers, 1996) for its 30th anniversary. Free, never sold, 100% original assets.

An open source, turn-based strategy game with a high fantasy theme.

Open-source Android/Desktop remake of Civ V

An open source alternative to Pax Historia

Command the forces of The Project in a battle to rebuild the world after mankind has been nearly destroyed by nuclear missiles. A 100% free and open source real-time strategy game for Windows, macOS, Linux, BSD+

OpenCiv3 is an open-source, cross-platform, mod-oriented, modernized remake of Civilization III by the fan community built with the Godot Engine and C#, with capabilities inspired by the best of the 4X genre and lessons learned from modding Civ3.

fheroes2 is a recreation of Heroes of Might and Magic II game engine

The Turn Based Strategy Game/eSport. Master your beasts! 🐺

TripleA is a turn based strategy game and board game engine, similar to Axis & Allies or Risk.

FreeCol: FreeCol is a turn-based strategy game based on the old game Colonization, and similar to Civilization. The objective of the game is to create an independent nation.

Unofficial open-source OpenGL/SDL2 reimplementation of Sid Meier's Alpha Centauri ( + Alien Crossfire )

Empire Earth 3: Multi-Faction RTS with Five Historical Eras for Windows