DOOM: SLIGE

SLIGE, which stands for "Space Llama Interment Gazelle Expert", is a random level generator for Doom & Doom II.

The generator will usually create levels which primarily consist of killing monsters and picking up health, weapons, and ammunition before reaching the exit. It is possible to modify SLIGE so that it creates more puzzle-oriented levels, where the player needs to find keys or switches before being able to advance.

SLIGE was listed on Doomworld's Top 10 Infamous WADs, due to the reason that the quality of the SLIGE-generated maps was so good that many unscrupulous mappers claimed that the maps were entirely their own handwork. By default SLIGE tags the first sector of each level as a secret, and thus it is likely that older levels that start the player in a secret sector were based on SLIGE templates.