About

"Boss Training World" is pretty self-explanatory. It is a world where the player can fight bosses however they like.

The world difficulty is "Expert Mode", and all of the bosses and events are defeated.

It includes:

Several arenas, a lot of flat land, NPC Homes and "Teleport Stations" around the world, so the player can travel around quicker, an Enchanted Sundial, Bewitching Table, Sharpening Station, Ammo Box, Crystal Ball and several chests containing Potions and Food, as well as Storage Chests and the player's own personal room underneath the Nurse's room. (It's not that great, to be honest.)

Bosses you can fight (And where to find their respective Summon Item):

King Slime (Purity)
Eye of Cthulhu (Purity)
Skeletron (Snow)
Queen Bee (Jungle)
Brain of Cthulhu (Crimson)
Eater of Worlds (Corruption)
Wall of Flesh (Underworld)
The Destroyer (Purity)
The Twins (Purity)
Skeletron Prime (Purity)
Plantera (Jungle)
Golem (Jungle)
Duke Fishron (Ocean)
Moon Lord (Purity)

Events you can defeat (And where to find their respective Summon Item):

Goblin Army (Purity)
Old One's Army (Purity)
Frost Legion (Purity)
Solar Eclipse (Purity)
Pirate Invasion (Purity)
Pumpkin Moon (Purity)
Frost Moon (Purity)

Bosses and Events you can't fight (Might be added)

Dungeon Guardian
Lunatic Cultist
Celestial Events

Optional things the player can add (But are not currently in the world, so you'll have to get them yourself)

Star in a Bottles
Heart Lanterns
Campfires
Traps

You download it as you would with other maps.