MAP15

A level called MAP15 appears in each of several different games and megawads:


 * MAP15: Industrial Zone in Doom II
 * MAP15: Dead Zone in TNT: Evilution
 * MAP15: The Twilight in The Plutonia Experiment
 * MAP15: Dark Entries in Doom 64
 * MAP15: Fortress: Administration in Strife
 * MAP15: Bulls on Parade in Alien Vendetta
 * MAP15: City Heat in Community Chest 2
 * MAP15: Gates to Hell in Hell Revealed