Hell Ground

Hell Ground is a seven-level mapset by Alexander S. (Eternal), released on November 15, 2009. It requires a Boom-compatible source port with support of hi-res textures, tall patches and OGG music; the author recommends an OpenGL-compatible port such as GLBoom or GZDoom. It is set in a variety of gloomy and surreal locales, and features moody music taken from American McGee's Alice.