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.
Michael Hanson's Physics Model editor for Marathon 2. Make flying bobs, or flame-shooting pfhor, or... whatever you feel like. Update fixes lots of bugs, adds a couple of features (customizable lists!).
Does just what the Film Patcher does, but by patching your Marathon app instead. Get this one if you watch a lot of films-you won't have to edit each one.