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The Guide Rewrite ProjectStatus: Under revision
This Guide is currently being revised or has been revised partially. It does not meet all quality standards yet.Things to do:
 • More detail for every section.
 • Maybe transclude the boss arenas to their specific guides.

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[edit | edit source]

  • 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 HarpyHarpy or Wyvern spawns during an important fight.
  • A typical arena usually consists of multiple long rows of Wood PlatformsWood Platforms, or a flat surface on the ground or the air made out of Asphalt BlocksAsphalt Blocks 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. TrapsTraps and LavaLava can be used to easily kill enemies from Events, while certain bosses like King Slime Golem lack the ability to attack through solid blocks.
  • Placing CampfiresCampfires, Heart LanternsHeart Lanterns, HoneyHoney placed in BubblesBubblesDesktop VersionConsole Version and Heart StatuesHeart Statues will greatly increase Health regeneration in battle. A Mage may also want to place Stars in a BottleStars in a Bottle and Star StatuesStar Statues to regain Mana more easily.
  • Peace CandlesPeace CandlesDesktop VersionConsole Version reduce enemy spawn rate, which may help on bigger arenas.
  • You can build a house for your NurseNurse NPC near your arena. The House should have a BedBed, so in the middle of the battle you can use a Magic MirrorMagic Mirror or Recall PotionsRecall Potions 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 SteampunkerSteampunker move in, you can buy and use TeleportersTeleporters to devastating effect. When wired to a Pressure PlatePressure Plate placed above them, you can instantly transport across the arena as soon as you walk on them, greatly increasing mobility.

Specific Arena Designs[edit | edit source]

King Slime[edit | edit source]

See also: Guide:King Slime strategies

King Slime is one of the few bosses in the game that lack the ability to go through blocks. This can be exploited in multiple ways:

  • Climbing on a RopeRope high above the ground allows you to attack him at range safely without him teleporting.
  • Make one or two platforms above the ground; King Slime will eventually teleport to ground level and you can easily hit him from the platforms.
  • A flat area with small room below it with Platforms as roof for the player. King Slime can't enter small rooms and thus cannot reach the players in it.

It is no longer possible to exploit the King Slime's large size in Desktop version Desktop and Console version Console versions, as he can teleport to unreachable areas.

Eye of Cthulhu[edit | edit source]

A basic arena made for the Eye of Cthulhu.
See also: Guide:Eye of Cthulhu strategies

An arena for the Eye of Cthulhu should be large enough to dodge and maneuver around in. The recommended size is just about the size of the screen, as the boss does not require a lot of mobility.

The simplest arena design consists of multiple rows of wooden platforms to have more room to jump and dodge. As the fight will be at night, add torches to improve visibility.

Another design is a long, completely flat surface. This allows you to dodge the Eye by running to the left or the right with Swiftness Potions or Hermes Boots.

Eater of Worlds[edit | edit source]

Multiple platforms made for the Eater of Worlds fight.
See also: Guide:Eater of Worlds strategies

The player must be in The Corruption to summon the Eater of Worlds; moving too far away from the biome during the battle will cause it to flee.

The Eater of Worlds is a very large Worm enemy, so dodging it may prove to be difficult. Make the arena fairly tall, thin, and easily climbable with many Platforms. That way, not only you can see it coming, but this will force it to climb in a relatively straight line, leaving large portions of its body exposed, and vulnerable to piercing attacks.

The above setup assumes the Eater of Worlds is fought on the Surface. If you are breaking Shadow Orbs, hollowing out an entire arena every third orb or escaping to a surface arena may not be practical; you should still modify the terrain around you to have a clear path of escape from the chamber where the Orb is located and ideally, easy access to a cleared space with good horizontal clearance and any hazardous terrain smoothed out or boarded over.

Skeletron[edit | edit source]

The entrance to the Dungeon can be easily adapted into an arena.
See also: Guide:Skeletron strategies

The entrance area to most dungeons can often be modified into a more desirable arena if needed. Most important is that you have room to dodge the hands, as well as enough vertical space to avoid getting trapped when Skeletron's head begins to spin.

Take caution when modifying the structure of the dungeon. If the floor is modified too much, this may prevent future bosses (Lunatic Cultist) from spawning.

A simple, effective, and time-consuming approach is to build a Sky Bridge with Minecart Tracks. Then spawn Skeletron, hop in your minecart, and speed away. Skeletron will chase after you but will not catch you. Kill it with ranged attacks. If you run out of tracks before you kill it, die, and add more tracks before you spawn it again.

Invasions[edit | edit source]

Most enemies from Invasions lack the ability to attack or go through blocks.
See also: Guide:Defending against events

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.

Wall of Flesh[edit | edit source]

See also: Guide:Wall of Flesh strategies

The Wall of Flesh benefits from having an arena prepared more than other bosses.

The simplest arena is a long bridge of about 750 blocks with some space above it for the player to maneuver. Placing the player out of danger from falling into lava and ensuring that they can keep a steady pace of progression allows the fight to go quickly and smoothly. Players may also wish to place lights and make holes to drain Lava from Lava Slimes along the bridge.

Note that Underworld map generation tends to place Ruined Houses towards the middle third of the map, leaving the eastern and western wings mostly clean.

The Wall of Flesh begins its attack from whichever side of the Underworld's map edge you're closest to. This allows you to control its direction of approach. Fight in the direction you're most comfortable with.

Killing the Wall of Flesh will generate a bricked-in treasure box above your bridge. The bricks can serve as kill-markers, but they may interfere with movement if your next fight runs close to that spot.

The Destroyer[edit | edit source]

See also: Guide:Destroyer strategies

Your Eater of Worlds arena should also serve as an arena for fighting The Destroyer as both bosses act in a similar way, however The Destroyer does not need Corruption present to be summoned.

Alternatively, you could start by building around 250 feet into the air. Create a rectangular box at the top. The rectangular box should be around 5 blocks high, and 20 blocks wide. If built tall enough, the box will make the Destroyer unable to reach the player while also protecting them from its lasers, leaving only the Probes as a threat.

The Twins[edit | edit source]

See also: Guide:The Twins strategies

While the Twins can be defeated with just a regular arena, building a long skybridge is very effective against them due to their movement patterns; when running on a straight line it's hard to get hit by their charge attacks and Retinazer's lasers, leaving Spazmatism's Cursed Fireballs on its first phase as the only threat.

Plantera[edit | edit source]

See also: Guide:Plantera strategies

Build a long hallway, preferably about six blocks high and 100-200 blocks wide, with Teleporters at each end of the hallway. When you spawn Plantera, have it go through the hallway, and run to the edge of it to one of the teleporters. When Plantera charges after you teleport to the other end of the hallway and shoot down the hallway. Repeat this process until Plantera has been defeated.

Golem[edit | edit source]

See also: Guide:Golem strategies

The Golem can only be summoned in the Lihzahrd Altar room in the Jungle Temple. The Boss cannot go through blocks, so building small walls will greatly hinder its movement, making it much easier to kill. Additionally, the Traps found in the Temple can be used to deal some extra damage to the boss.

Moon Events[edit | edit source]

See also: Guide:Pumpkin Moon strategies and Guide:Frost Moon strategies.
Example of an arena made for the Moon Events, making heavy use of Traps.

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.

Spiky Ball TrapsSpiky Ball Traps and Super Dart TrapSuper Dart Traps can potentially cover the entire arena, while Spear TrapsSpear Traps and Flame TrapsFlame Traps 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 BedBed near the Arena, so in case of death you can quickly get back to it.

Moon Lord[edit | edit source]

See also Guide:Moon Lord strategies

The Moon Lord is the Final Boss in the game, and generally considered the most difficult.

The player will need a big arena, with ample room to dodge all of its attacks. A roof can be made with solid Blocks in order to prevent the Phantasmal Deathray from connecting, but this may hinder vertical mobility.

Alternatively, a long Skybridge made with Asphalt blocks or Minecart Tracks can also make it significantly easier to dodge by running in one direction. Teleporters should also be placed at the end of the bridge, in order to loop through it while running.

Dungeon Guardian[edit | edit source]

See also: Guide:Dungeon Guardian strategies

While it's not mandatory to defeat the Dungeon Guardian, some players choose to do so to obtain the Bone Key it drops.

The enemy can be easily defeated by outrunning it with Wings or flying Mounts, but building an Arena with automated Teleporters or Minecarts will make it significantly easier to kill. A Skybridge can also make the fight far simpler.

Other enemies[edit | edit source]

Ocean Enemies[edit | edit source]

Click to see a list of pages to be split It has been suggested that this page or section be split to Guide:Enemy farming.
Reason: "This details methods to farm enemies in the Ocean, it doesn't belong in this page, as it focus on arenas made for bosses and events. ~~Bame"

Ocean enemies can be farmed by building a long bridge over the ocean. This is a good way to farm Pirate Maps, key molds, glowsticks, shark fins, black ink, and, of course, coins. Build two layers of platforms - The first layer should be 2 blocks under water, the second one on top of the water. In the 2nd layer, stand in a small pool of water so that all of the mobs swim up towards you. This will cause water mobs to jump out of the water onto the platform. The Spider Staff is good for automatically killing the mobs as they obediently stay out of the water and is very easy to obtain. Another way to kill them is by connecting one-second timers to Spear Traps or Spike Ball Traps from the Lihzarhd Temple.