7 maps. A real grab-bag... some have really annoying texture combinations, and some are quite enjoyable. (The last one is a pretty fun 5-D space kinda thing.) All maps are geared for smaller groups, although some will support more.

Bunch of tweaks, bug fixes, new features. Check out the latest changes. Guides and other helpful documents can be found in the "Instructions / Guides" section.

A three level scenario, but you could count it as one... the first two levels seem kind of pointless. And since you can pick up an invincibility just before leaving level 2, and not have it wear off until you finish level 3, you might consider level 3 pointless as well...

A bunch of Marathon players took 54 of their favorite small maps, edited them a bit to their liking (more ammo, lower ledges in some cases, etc.), and stuffed them into a single Map file, to make net play easier. Unfortunately, the documentation is a bit sparse... (hard to tell which map comes from where, or what was done to it). If you're looking for a large collection of maps that someone else has already said is above average, download this.