Survive in a cube full of resources.
There are 3 cubes for you to survive.
There are hostile mobs and a staircase for them.
A hall of valuables for you to insert valuables in order to complete the map.
Full description in the Minecraft Forum Thread.
P.S. You may find a pledge saying I will make a sequel if it reach 10000 downloads. As this is the CURSE network, I will lower it to 100.