LZDoom is described as 'Is based on an older version of GZDoom. It does not provide all features currently supported by GZDoom but in turn is capable of running the hardware renderer on older hardware which does not support modern OpenGL features' and is a Game Emulator in the gaming software category. There are more than 10 alternatives to LZDoom for a variety of platforms, including Windows, Linux, Mac, Android and Android Tablet apps. The best LZDoom alternative is idTech4A++, which is both free and Open Source. Other great apps like LZDoom are GZDoom, Doomsday Engine, DOOM Retro and Crispy Doom.