Does for M2 what the OPE did for M1. Allows simple placement of objects (including baddies and bobs) on any level. Add nasties to Bungie's net levels, so you can play them solo! This version adds a much faster searching algorithm and the Marathon 2 default set.
2 Levels. Pretty well-done maps... One is a very nice rendition of Mike Neylon's "The Pit". (Doesn't look anything like the original, but that's what the readme says...) The other map is a model of the creator's house.
Based on a literary passage that describes a city with a lake beneath it that doesn't go beyond the city's borders. Well done, but can be confusing figuring out where you are.