An open-source re-implementation of Bullfrog's Sim Theme Park / Theme Park World (1999)

An open-source GoldSrc engine clone (Clean authentic reimplementation without using reverse-engineered code)

Modern C++23 reimplementation of the Microsoft XNA 4.0 API on SDL3, with 46 pluggable renderers (SDL_Renderer, OpenGL, bgfx, etc.) and cross-platform networking.

reimplementation of the 1994 FPS Nitemare 3D

Game engine for Command & Conquer: Yuri’s Revenge

Playable high-level reimplementation of the engine for LAYTON2 (Professor Layton and the Diabolical Box / Professor Layton and Pandora's Box)

An open-source re-creation of the PiKLib/BlooMoo game engine in Rust

This is a reimplementation of the game Stars! using Java and Spring, persisting to MongoDB. Maybe there will be a UI. Currently it is a demonstration of a pattern, which aims at allowing extensions to be made by other parties.

Dynamite Dan Multiplayer is reimplementation of Dynamite Dan game engine as online multiplayer game