MAP13

A level called MAP13 appears in each of several different games and megawads:


 * MAP13: Downtown in Doom II
 * MAP13: Nukage Processing in TNT: Evilution
 * MAP13: The Crypt in The Plutonia Experiment
 * MAP13: Dark Citadel in Doom 64
 * MAP13: Catacombs in Strife
 * MAP13: Suicidal Tendencies in Alien Vendetta
 * MAP13: Annihilation Invention in Community Chest 2
 * MAP13: Last Look at Eden in Hell Revealed