4 levels (three great, one so-so). Zig Zag is too open for slower machines, but the rest are some of Butch's best. (He's been busy since I've been here last!) One game on Press Box (6 player) racked up a kill rate of 36 deaths/minute! Think fast (really, really fast) or die.

Big. Some interesting stuff (check the outside carefully). Update just adds random monsters.

From Ryan Martell, one of Bungie's programmers... Useless to non-programmers, priceless to anyone who wants to make extensions for Marathon.

The last version for Marathon 1. Changes aren't documented, but seems to be mostly pallette changes (there's now a Texture popup!). If you've got the space, definitely worth having around.