Guide:Arena

An Arena is generally an area that the player builds where they can face a Boss or other significant challenge more easily. Each arena can be different for each boss, some consisting of a flat area or multiple layers of Platforms supported with Statues.

General Arenas

 * An arena is better built away from Bases so NPCs won't get hurt or killed. It's better built near the ground, far from Space so there won't be any unwanted or Wyvern spawns during an important fight.
 * A typical arena usually consists of multiple long rows of, or a flat surface on the ground or the air made out of to greatly increase running speed.
 * Sometimes, the shape of the arena depends on the Boss or Event and how the player decides to fight it. and  can be used to easily kill enemies from Events, while certain bosses like King Slime and Golem lack the ability to attack through solid blocks.
 * Placing, , placed in  and  will greatly increase Health regeneration in battle. A Mage may also want to place  and  to regain Mana more easily.
 * reduce enemy spawn rate, which may help on bigger arenas.
 * You can build a house for your NPC near your arena. The House should have a, so in the middle of the battle you can use a  or  to visit the Nurse and get instant healing. The house is better built away from the arena to prevent the Nurse from being killed.
 * Once you have killed a Mechanical Boss and had the move in, you can buy and use  to devastating effect. When wired to a  placed above them, you can instantly transport across the arena as soon as you walk on them, greatly increasing mobility.

The Destroyer
Using a Daedalus Stormbow with holy arrows can be extremely effective due to the destroyer's length making it easy to hit

General Invasions
Invasion events such as the Goblin Army, Pirate Invasion and Martian Madness can only be fought near the Spawn, or somewhere close to an NPC.

Before starting an event, make sure NPCs are protected, otherwise they will be attacked and possibly killed during the fight. Placing a block in front of a Door will prevent enemies from forcing them open and killing the NPCs.

If defended properly, the events can then be easily fought on a player's Base, using the Houses built as cover. Since most enemies from invasions lack the ability to attack through walls, they can be easily killed while standing above them in an enclosed room. However, make sure to have an exit ready for when the enemies that can attack through blocks spawn.

Moon Events


The Pumpkin and Frost Moons are much easier to handle with the proper arena.

A flat surface about 168 blocks wide (See NPC spawning) will focus all spawns on the arena. Above it there should be a long platform of the same width, high above the ground in order to keep the enemies out of Melee reach. Since the player will mostly focus on the Bosses on the later waves, it's a very good idea to support the arena with a Lava pit and Traps to take out the weaker enemies more easily.

and can potentially cover the entire arena, while  and  should be placed at the Lava pits to make full use of their limited reach but high damage.

It's also a good idea to make a room with a near the Arena, so in case of death you can quickly get back to it.