Open-source alternatives to Heretic2

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).

Cross-platform port of Arx Fatalis, a first-person role-playing game

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Banjo: Recompiled is a project that uses N64: Recompiled to statically recompile Banjo-Kazooie into a native port with many new features, enhancements, and extensive mod support. This project uses RT64 as the rendering engine to provide graphical enhancements.

A high-fidelity reimplementation of Crimsonland v1.9.93 (2003, GOG "Crimsonland Classic") in Python raylib, paired with deep reverse engineering of the original Windows binary.

Unofficial source port for Blake Stone series

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…

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…

This is open source Grand Theft Auto 1 remake project.

Join us on Discord!

Open Source role-playing game engine for Taleworlds' Mount&Blade Series written in C# using Ogre3d Engine.

A remake of the 1995 RPG Albion

Classic overhead run-and-gun game

A collection of classic arcade game remakes built with C++ and SFML. This project serves as a demonstration of game loop fundamentals, object-oriented design, and clean inter-file communication.

Open-source Jazz Jackrabbit 2 reimplementation

DGEngine is an implementation of the Diablo 1 game engine.

1. Import Project in IntelliJ

dhewm 3 (Doom3 sourceport) main repository

Nightly builds | Platform ---:| ---

devilutionX is an open-source, cross-platform reimplementation of the original Diablo 1 game engine. It is a software framework designed to run the original action RPG logic and mechanics on modern operating systems by rewriting the engine in a current programming language. The project modernizes the legacy experience by adding support for widescreen resolutions, high-definition scaling, and configurable input mapping for various hardware controllers. It also introduces quality-of-life enhancements such as health bars, auto-loot, and tools to modify game speed and combat rules. The engine co

Unreal Engine 1 Reimplementation

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.