A couple of levels, and a small shapes patch. The first level is seriously claustrophobic, and you'll be hitting your head on the stairs every time you go down. The fun part comes in with the small shapes patch...

A simple arena, in principle... but play it for a little while, and you might change your mind. The hill is accessible via 5D passageways from the outer ring... and you come out on the far side from where you started. Big weapons are on the hill, everything else is in the pit surrounding it... and to make matters a bit more complicated, 3x canisters can be found in sort of hidden corners (we found ourselves shooting at them just out of principle... you never knew when someone would be in there). Adds up to serious carnage, with anything more than 2 players.

A tiny arena, nice to look at, deadly to be in. In the words of the author, "a real all-punching instant death trip." No weapons, no baddies (well, except for the occasional fighter), and it's set with the Rebellion flag... so you're down to minimal health when you start. Designed for 4+ players (remember, it's tiny!). If you're lucky, you'll be near the center when the rare 2x canister or alien weapon appears. (Then the death rates really go up.)

A tutorial (with nifty pictures and an example map) showing how to allow multiple messages on a term without tying them to full level goals. That is, if you want to change the message on a term after a particular task is completed, but before all the level tasks are completed, this little guy will show you how. My wife says I wrote it because I was feeling like a cool technique we used a few years ago was unappreciated. I'd rather think it's useful info for the Marathon community.