Quite nice... 5 levels, sorta. The first is simply an intro, to get everyone on the same wavelength. The next 3 are a netloop... each is small, complex, with fantastic flow. The last level is simply the 3-level netloop combined into one level. If you've never played these before, or your group is small, use the three-level loop. If you're familiar with the levels, or you've got a big group, play with the 3-in-one level. Either way, enjoy superb carnage from a superb designer.