This map(MC v1.2.3) has 2 features.
Best Viewed with Johnsmith Texture pack. Get it here http://www.minecraftforum.net/topic/26727-johnsmith-texture-pack-v92-32x-12-with-customizer-0301/
First off there is a Starship high above made by myself. The ship is complete with power core, main bridge, secondary bridge, quarters, cannons, galley, captains quarters, 2 cargo bays, and 2 fighter hangers.
Inspired by Star Trek, Star Gate and Battlestar Galactica.
Second is below. An automated Mob arena Version 1 Built by Aracongi with some help from Syntacks. This thing is complex! sleep in the bed near the entrance, flick the switch (mine cart up top will start to circulate meaning it is working) and enter the mob arena. This version is a work in progress but is working as is. fight zombies, skeletons, and cave spiders. There is no exit once in the arena atm.
PLEASE view this world with the included mod TERATOMIC MOD 1.5.1.zip installed. You will need to have MODLOADER installed as well - it's available here: http://www.minecraftforum.net/topic/75440-v151-risugamis-mods-updated/
I've also included the texture pack for 1.5.1 alone. You'll miss out on custom blocks and items, and some builds may appear incomplete, but at least most of the world will look right.
When the map is released as an adventure map in its final format, the experience will be extremely limited without using the mod. If you are downloading this map because of a particular build I've included, please understand that it may contain custom blocks and items which depend on the Teratomic Mod to be complete.
See the included README file for more info/instructions.
Features include full castle walls, castle keep, lava moat on 2 sides, water area on other two sides, wheat farm that self-harvests with a single bucket of water, healthy mine, bamboo farm, self-harvesting cactus farm, lava pillars, tree farm, mushroom farm, under-castle jail, underground connections to all of the above, creeper statue, and a deep underground "Stargate" room (24X26X30) with working portal to the Netherworld.
This started out as my personal world. I then moved it over to a multiplayer world so my wife could play with me as well. Our buddy then joined and has added as well.
All of this has been built and all materials gathered legitimately.