E3M1: Hell Keep (Super NES Doom)

E3M1: Hell Keep is the first level of Inferno in Doom for Super NES. It is based on the original, with modifications to adapt the map to the console's limitations. The author of the original map is Sandy Petersen and it uses an S-SMP arrangement of the music track "Untitled".

Comparison of versions
Some strange differences exist when compared to the PC version of the level - some geometry seemingly within the sky wall was added in the first room, an area exists behind the right-hand wall of the second corridor branching to the right from the main entrance, and a hidden room seems to exist inside the secret near the end of the map. It is unknown how, or if it is possible at all, to cause these areas to appear in the course of normal gameplay; they likewise do not contain any deathmatch starts.

According to Randy Linden, the SNES version's map set originally had various differences from the PC version alongside the existing differences already seen in the final game, which were intended to make the game flow better when played on a controller, however these changes were rejected by id Software. This extraneous geometry may be a leftover from this.

Things
This level contains the following numbers of things per skill level: