It's a very simple set of generic rules. You need no more than 24 bases of models.
It can be played at any scale I believe (6-54mm?) and there are no specific army lists, you choose from a variety of 'classes' such as hero, blade, warband, magician, shooter, behemoth, etc.
The most popular scale is 15mm, and I believe the book suggests 10mm-15mm, so the base sizes remain the same.
It is a nice little set of rules, if you don't take it too seriously, and can be played in 30mins, so losing isn't a big deal.
