An extremely well-done 8-level solo scenario. (Well, the count's a little suspect-there are a couple of levels that probably shouldn't be counted (they're added for story continuity, but except for weapons refreshment, they don't have much on 'em), and one net level that's simply the last level, redone for netplay-but the important part is that it's a full scenario.) The story revolves around the battle for a water supply plant... and has a non-standard ending. The chapter art is inspired. Highly recommended.

A pretty big map, but very pleasant to look at, and open enough (with enough access to most points) that even smaller groups should enjoy it. Great lighting and sound... one of the more impressive releases off the (now-defunct) Testing Grounds. Update is only for email address change.

A very nicely done solo level... the first of a series that will make up the first installment Marathon map ever released. Quite difficult, as are most of Tony's maps... but very satisfying. If you can't figure out what you need to do next, go back and check recently visited areas, looking for changes. Great term art (the best use of Bungie art to date, imo). As usual, dive into the melee; wield superior firepower; endure. (Just don't cheat-this one's too much fun...)

Derived from Tanks, What a Wonderful Thing, this map has lots of water, lots of passageways, and just enough depth change to get you to blow yourself up every so often.