4 levels, all orginal. Some very nice twists on KOH-type games... and one that wouldn't work with two people (it's called Eyes in the Back of Yer Head, and you wouldn't need 'em without a third person...). Carnage rating-very high.
5 more... a mix. Launching Pad is great, but really slow on slower macs... and there's a map here that reminds me how much that Alien textureset hurts my eyes.