This is one of the most useful plugins for Aleph One, because it directly addresses one of the biggest problems of Marathon: getting lost with no idea of where to go or what to do.
During the 1990s, being lost with no idea of where to go or what to do was pretty common in first person shooters, including in Bungie's official campaigns. But modern shooters will usually give the player a waypoint to follow and a mission objective on their HUD telling them what to do when they arrive at their destination.
While some purists may disdain this modern-day holding of the player's hands, the bottom line is that unnecessary downtime sucks, modern shooters are streamlined to provide lots of action with little downtime, and Marathon falls short in that area.
What Eat the Path does is provide more streamlined gameplay by showing the player the location of their next likely objective. This can be depicted both on the auto-map, and visually with a trail of floating lights to follow. The player has to manually trigger these hints, so it can be used as much or as little as you please.
Although the plugin will not work 100% of the time, in my experience in using it on over a dozen different scenarios it has helped most of the time I have used it. It's not just helpful if you get lost; it can also help you find secrets. If you don't like the objective it sets you can choose a new one.
This is a huge help that will save you time and, if you're a completionist like me, it will help you fully explore every level!
Finally, a plugin that ruins mararthon.
This is a plugin for any marathon scenario that will act kind of like GPS navigation when activated. It can show just about any worthwhile objective on the map, and in most cases lead you directly to them.
This is a huge cheat, so it's not really recommended if you want the "true" marathon experience. It's for people that either don't have the patience to navigate through mazes themselves, or for people that just want to make sure they found everything on a given level. It can be very useful for tracking down all secrets.