A beautiful base map that shines with graphical perfection. Gameplay is ok (only grunts and enforcers plus a few rotfish) and very straight-forward (no keys).
Small medieval outpost with a unique texture theme and horde-based combat. A touched-up version of an old deathmatch map converted for SP mode. Comes with a custom skybox.
Three independent levels connected by a start map.
Voidscape: Very small rocky island floating in space.
Brownie: Small medieval fortress with an atrium and tower areas.
For The Love Of Evil: Large Metal/runic map with majestic halls and various traps. (On hard difficulty, the map exceeds the max_edicts limit, so it requires a source port with increased limits).
Classic singleplayer campaign made by Gotshun that was never finished or released: Two episodes with 16 levels of various themes including a start map and a secret map. The second episode lacks a conclusion/boss fight due to the unfinished nature of the pack, but it is perfectly playable.