gzdoom-legacy: gzdoom-legacy (OpenGL port of DOOM) gzdoom-legacy: gzdoom-legacy: Enhanced OpenGL port of the official DOOM source code that also gzdoom-legacy: supports Heretic, Hexen, and Strife. gzdoom-legacy: gzdoom-legacy: This is an older version of gzdoom, for use on older/slower systems. gzdoom-legacy: gzdoom-legacy: gzdoom-legacy: gzdoom-legacy: gzdoom-legacy: