Abandon is a Boom-compatible wad composed of large, difficult slaughter maps.
Cryogenics is a four-level PWAD for boom-compatible source ports designed by bemused and released in December, 2017. All four levels are designed around the slaughter map trope; ex...
16 maps designed to be played from a pistol start for PrBoom+ complevel 9. Difficulties are implemented.
Maps vary in length and complexity, with some harder fights being optional. 3 secret maps full of BS and nonsense for those who like being abused by videogames.