Open-source alternatives to Daggerfall Unity

Exult is a project to recreate Ultima 7 for modern operating systems, using the game's original plot, data, and graphics files.

OpenMW is a modern, open-source game engine designed to execute the game Morrowind and its expansions. It serves as a cross-platform game runtime and 3D world renderer, providing a data-driven environment to run game logic and physics with improved stability. The project functions as a game modding framework, utilizing a modular plugin system and an interpreted scripting layer to load external modifications. This architecture allows for the integration of community content, custom textures, and external scripts without altering the base executable code. The engine covers a broad range of cap

Open reimplementation of Might and Magic 6 7 8 game engine

OpenDiablo2 is an open-source re-implementation of an isometric action role-playing game engine. It functions as a cross-platform game client designed to execute core mechanics and logic across multiple operating systems using external game assets. The project focuses on recreating the functionality of a classic action RPG from the ground up through a community-driven effort. It provides a framework for running a game engine that simulates specific gameplay experiences and movement patterns. The engine includes capabilities for isometric projection rendering, deterministic game state simulat

This project is a reference implementation and starter template for developing role-playing games in Godot. It provides a structured architecture for large-scale game development, featuring a pre-implemented framework for core RPG systems. The project distinguishes itself through a focus on code standardization and developer experience. It implements static type hinting and a standardized code layout to ensure consistency, alongside a docstring documentation system that extracts metadata from source code to generate reference guides and editor tooltips. The repository covers several core gam

Fallout for modern operating systems

Room for Change - Randomly generated action RPG

Zelda Classic is a game and editing tool that lets you create custom Legend of Zelda quests.

CatacombGL is a source port with OpenGL graphics for Catacomb 3D (1991), The Catacomb Abyss (1992), The Catacomb Armageddon (1992) and The Catacomb Apocalypse (1993).

A free, single-player roguelike dungeon exploration game

Aleph One is the open source continuation of Bungie’s Marathon 2 game engine.

portable, enhanced runescape classic client ported to C99. supports 204 and 177 protocols. original mudclient204 java source refactored by v0rtex/xetr0v and Isaac Eggsampler. compatible with rscsundae, openrsc and 2003scape.

High-performance QuakeSpasm fork

Unofficial source port for Blake Stone series

Open Source J-RPG (Based on the Hero of Allacrost engine)

DOOM Retro is the classic, refined DOOM source port for Windows PC. It represents how I like my DOOM to be today, in all its dark and gritty, unapologetically pixelated glory. I have strived to craft a unique and cohesive set of compelling features, while continuing to uphold my respect for that…

open source, multiplayer, extensible rogue-like

This repository was moved to GitLab: https://gitlab.com/solarus-games/zsdx

ClassiCube is a custom Minecraft Classic compatible client written in C from scratch. ClassiCube is not affiliated with (or supported by) Mojang AB, Minecraft, or Microsoft in any way. ClassiCube is not trying to replicate modern Minecraft. It will never support survival, Minecraft accounts, or…

Cataclysm-DDA is an open-world survival game and turn-based roguelike set in a post-apocalyptic world. It functions as a simulation where players manage resources, engage in combat, and handle character progression in an environment where time only advances when the player takes an action. The project includes a procedural world generator that creates randomized, persistent environments and city layouts, ensuring unique maps for every new game session. The simulation covers tactical movement and resource management through turn-based strategy gameplay. It also provides options for personali

Fantasy action RPG using the FLARE engine

This is open source Grand Theft Auto 1 remake project.

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OpenJazz is a free, open-source version of the classic Jazz Jackrabbit™ games.