Basically one side is defending the castle and the other is attacking, plain and simple. This is not exactly themed as anything, thus you can have cavemen beating the snot out of robots. However unearthly (I mean, extremely unearthly) things are not possible and will not be counted (such as "The castle falls" Or you can go in stealthily and slay the king, really the primary objective.
Castle Status
The castle is a simple stone wall, no towers, buildings, nothing. There are four parts of the wall creating a perfect stone square. The king is in the middle
Kings HP: 100/100
Front wall: 1,000/1,000 HP
Left (from attacker's view) wall: 1,000/1,000 HP
Right wall: 1,000/1,000 HP
Back wall: 1,000/1,000 HP
There are no buildings
There is no siege equipment
There is a forest where the attackers come from and a lake behind the castle.
Pretty simple, just do something to affect the castle/build siege equipment.
I shall gather a group of aliens from some nameless random planet and they shall blast the Left Wall to dust particles with their laz0r beamz. Mwahahaha.
The castle is a simple stone wall, no towers, buildings, nothing. There are four parts of the wall creating a perfect stone square. The king is in the middle
Kings HP: 100/100
Front wall: 1,000/1,000 HP
Left wall: 1,000/1,000 HP Right wall: 1,000/1,000 HP Back wall: 1,000/1,000 HP
There are no buildings
Aliens have landed at the attacker's area and prepare their weapons.
There is a forest with some flattened trees and a UFO where the attackers come from and a lake behind the castle.
The castle is a simple stone wall, no towers, buildings, nothing. There are four parts of the wall creating a perfect stone square. The king is in the middle
Kings HP: 100/100
Front wall: 1,000/1,000 HP
Left wall: 1,000/1,000 HP
Right wall: 1,000/1,000 HP
Back wall: 1,000/1,000 HP
There are no buildings
A UFO is in the attackers area with laser beams sprouting up towards a dragon, which is burning everything in the defence of the castle.
There is a forest with some flattened trees and a UFO where the attackers come from along with some burning trees and a lake behind the castle.