HLE 3DS emulator
Original Xbox Emulator for Windows, macOS, and Linux
RPG Maker 2000/2003 and EasyRPG games interpreter
Objeck is a modern object-oriented programming language
Haskell game engine library for roguelike dungeon crawlers
A greedy game engine for greedy programmers
A modern, cross-platform Quake game engine based on FitzQuake.
3D modeler, 3D game maker, 3D demo maker
a free, multiplatform console-mode gopher client
Graphics library (GRAPHICS.H) for C, C++, WebAssembly, and Python.
General Purpose Engine for Graphic Adventures.
GSX functions library for CP/M (...and SDL2 with SDL2_gfx)
An SDL2 based maze-game.
Emulator of the 8-bit computers Sharp MZ-800 / MZ-700
A conservative source port of Heretic that is identical to DOS
A c++ public domain audio output class
An authentic Rise of The Triad Dark War source port
Conservative port of BOOM 2.02 to modern systems.
View64 is a image viewer for C64 images
A conservative source port of Hexen that is identical to DOS
3rd Party Video Games Developer: MetalManGames, titles of games
Pooch is a port of MBF to SDL2.
A conservative source port of Wolfenstein 3-D
M-JPEG, RFC2435, RFC4175 and V4L2 playback libraries
This wants to be a placeholder for the port of Tux Paint to SDL2