DirectDraw and Direct3D 1-7 compatibility, performance and visual enhancements for Windows Vista, 7, 8, 10 and 11

Library to handle RPG Maker 2000/2003 and EasyRPG projects

DOSBox-X fork of the DOSBox project

UZDoom is a feature centric port for all Doom engine games, based on GZDoom, adding an advanced renderer and powerful scripting capabilities

OpenTTD is an open source simulation game based upon Transport Tycoon Deluxe

RPG Maker 2000/2003 and EasyRPG games interpreter

A feature-rich command-line audio/video downloader

Godot Engine – Multi-platform 2D and 3D game engine

This is a successor of prboom+ with extra tooling for demo recording and playback, with a focus on speedrunning and quality of life.

High-performance QuakeSpasm fork

It's a Doom editor