Open-source alternatives to Wyrmsun

Warzone 2100 is an open-source real-time strategy game engine focused on tactical combat and base building. It operates as a real-time strategy game engine utilizing a data-driven asset pipeline and providing cross-platform support. The project features a modular unit design system that uses a technology tree to construct combat entities by combining chassis, propulsion, and weapon components. It includes a lockstep multiplayer network engine to synchronize game state across distributed clients for competitive matches, as well as a JavaScript game scripting framework for implementing custom l

Beyond-All-Reason is a real-time strategy game and 3D military simulation focused on large-scale tactical combat, base building, and resource management. It functions as a competitive multiplayer platform featuring ranked lobbies and skill-based matchmaking. The project includes a custom map editor for designing unique game levels and environments through structural and thematic configuration. The simulation covers military-industrial economy management, including resource extraction and asset recovery. Tactical gameplay involves commanding army formations, using radar for enemy unit detecti

Open source remake and Fan Expansion of Dungeon Keeper.

Mindustry is a cross-platform game engine and factory automation simulation that combines resource management with tower defense strategy. Players construct complex supply chains and automated networks to process materials while building defensive structures to protect a core from waves of hostile mechanical forces. The project utilizes a deterministic lockstep networking model to ensure simulation consistency across desktop and mobile devices. It is built on an entity-component-system architecture and a tile-based grid simulation, allowing for the efficient management of thousands of active

A Real Time Strategy game for Linux.

Dungeon Crawl: Stone Soup official repository

Caesar III (Open source remake)

A modern real-time strategy (RTS) game engine built with C++20, Qt 6, and OpenGL 3.3 Core.

NetHack is a roguelike dungeon crawler and ASCII-based role playing game. It is a turn-based adventure game featuring permanent character death and the exploration of randomly generated dungeons. The project serves as a cross-platform game engine designed to be compiled and run across diverse operating systems and hardware architectures. It focuses on retro game preservation by maintaining classic game logic for modern computing environments. The codebase implements procedural content generation for maps and encounters and utilizes a grid-based coordinate system for spatial tracking. Renderi

This repository contains Swarm Assault remake project based on the OpenRA Mod SDK.

CorsixTH is an open-source game clone and hospital management simulation game. It functions as a reproduction of a classic management title where players coordinate staff and treat patients to manage a medical facility. The project includes a level editor tool for designing original maps and campaigns. It also features a customizable input system that allows users to map game hotkeys and personalize control schemes. The simulation supports game localization to translate interface text and dialogue into multiple languages.

Last Colony, is an RTS game with both a single player campaign mode as well as a multiplayer mode, created entirely in HTML5 and JavaScript.

Official Hedgewars mirror for GitHub!

A Pikmin-based game/engine for fan-made content.

An underwater one-button real-time strategy game.

A KKnD and KKnD2 mod on OpenRA engine.

Phone Case of the Monster

LibGDX is a Java-based framework designed for cross-platform game development, enabling the creation and deployment of 2D and 3D games across desktop, mobile, and web environments from a single codebase. It functions as a comprehensive library that abstracts hardware-accelerated graphics, audio, input, and file system access, providing a unified interface for developers to manage game logic and application lifecycles. The framework distinguishes itself through a high-performance architecture that prioritizes efficiency and native interoperability. It utilizes a batch-oriented graphics pipelin

A physics platform game about a plucky wheeled robot named Polly.

MegaGlest real-time strategy game engine (cross-platform, 3-d)

Source code of KeeperRL

Romanov's Vengeance is an OpenRA mod based on Red Alert 2.

Source code of open-source Colobot: Gold Edition project developed by Epsitec and TerranovaTeam

Brood War API

OpenBW - free and open-source Best Wargame

An OpenGL RTS game engine written in C