Item World

The Item World is a recurring feature in the Disgaea series that allows you to make items stronger.

How it works
It's accessed by talking to each game's corresponding Item World Guide and selecting an item from the inventory or warehouse to enter its Item World. The Item World itself is a series of randomly generated stages(random size, shape, enemies and Geo Effects), and as you traverse through them you can make the item stronger through various means:


 * Increasing the item's level by clearing floors(and other random events)
 * Defeating Item Bosses
 * Subduing Specialists

The level of the enemies encountered depends on the item's rank, and goes up as the item levels up. Once inside, it's only possible to leave by clearing an Item Boss floor or using a special item called Mr. Gency's Exit.

All games have an Item World tutorial during chapter 3 that requires the player to progress a certain amount within the Item World before moving on with the story. This tutorial also grants some free Mr. Gency's Exits.

Below is a list of the changes and new features added with each game.

Item Level
An item's level is increased by 1 every time a floor is cleared, either by killing all enemies or by stepping into the Skip Gate on each floor. Each level increases the item's non-zero stats by InitialStat/20 + 1 (instead -1 for negative stats), where InitialStat is the stat's value at level 0(ignoring Specialists).

The maximum level is 100 but not all items can reach it, as the amount of floors an item has depends on its rarity: 30 for Common items, 60 for Rare and 100 for Legendary.

Item Bosses
The Item Bosses are particularly strong enemies that appear on every 10th floor. Each Item Boss defeated permanently increases all of the item's non-zero stats.

Specialists
Items may be inhabited by Specialists, which grant increased stats or various other bonuses. Specialists can be randomly found as units while traveling the item world, and killing one subdues it, doubling its level and allowing you to move it between items.

Killing an Item Boss while an item has a stat-boosting Specialist grants a small increase to that stat. The increase depends on the amount of Specialists, but not their level.

Disgaea 2: Cursed Memories
Item level now goes up to 200, so more ways of gaining levels have been added.

Mystery Gates
Sometimes a portal called a Mystery Gate will appear on a non-boss floor. These will randomly take you to one of many bonus rooms with useful NPCs or special fights that will increase the item's level.

Innocent Town
After a boss floor there's a chance to be transported to the Innocent Town instead of directly leaving. In there you may interact with various NPCs, heal your party, and pass special bills at the Item Assembly.

Pirates
At the end of each turn there's a chance for a crew of Pirates to invade the current stage, increasing the amount of enemies you must deal with. There's all sorts of Pirates, and every game presents different prizes for killing them.

Level Sphere
After going down a certain amount of floors, a special object called Level Sphere may randomly spawn on each floor. The item's level increases by 5 if all enemies in a floor are killed while a character lifts a Level Sphere. While first introduced in Disgaea 3, they were retroactively added to Disgaea 2: Dark Hero Days.

Reverse Pirating
A new feature you can choose from the Item World Guide that lets you pick a ship and invade a special stage as if you were a Pirate. Inside those stages you will find multiple enemies, treasure chests, Level Spheres and Specialists. The Specialists can be subdued as normal, but if you manage to throw them into your ship instead their level will be doubled.

There's various ships that can be obtained, each setting a different limit of turns you have to plunder things, as well as different amount of chests, spheres and Specialists it can hold.

On each item it's only possible to go Reverse Pirating once for every 20 cleared floors, for a maximum of 5 visits on a Legendary item.

Disgaea 4: A Promise Unforgotten
Item level now goes up to 300, and the stat gain per level has been increased to InitialStat/15 + 1.

Pirate Editor
Reverse Pirating returns, and now instead of using premade ships there's a wide selection of ship parts that can be combined at will(see the Pirate Editor page for details).

Branching Routes
Every 5th floor will have 2 exit portals. You will be put into different routes depending on which portals you take, each granting different bonuses:


 * Item Growth Route: Accessed by taking only the portal with the sword icon. Increases the item's level every time you take the sword portal, and increases the chances of Level Spheres spawning. This route can also increase the amount of times you can access the Item Assembly.
 * Innocent Boost Route: Accessed by taking only the portal with the smiley face. Gives additional levels to Innocents subdued while in it, and adds a chance for Mystery Innocents to spawn within the Item World.
 * Treasure Route: Accessed by taking a mix of both portals. Increases the chance of treasure chests spawning.

Disgaea D2: A Brighter Darkness
The player now starts off in Innocent Town when entering the Item World on the floor they left off on. Item Assembly bills can now be passed at any time, and they cost HL instead of Mana. Branching Routes return, and now they can be toggled in the Cheat Shop instead of through portals. Mystery Rooms are now entered at random after each stage, instead of appearing as special portals.

Bonus Stages
Reverse Pirating has been replaced with Bonus Stages. They function similarly, except your have a random chance of entering one after every floor instead of entering by choosing the option at the Item World Guide. Bonus Stages can appear on any non-boss floor, but most commonly appear on Floor 25, 51 and 76. There is a limit of 3 Bonus Stages per 100 floors.

Upgrading Rarity
Clearing all the available floors on a Common or Rare item upgrades it to the next category(from Common to Rare, and from Rare to Legendary). However, the current floor is be reset to 1.

Kill Bonus
Unlike previous games, the stats growth of an item can be increased by defeating enemies in the Item World, up to 15% bonus if 1000 enemies or more are defeated.

Rasestu Mode Changes
If Rasetsu Mode is turned on, the Level Limit increases from 300 to 999, and a secondary kill bonus based on strength of enemies killed in the Item World can be obtained along with the primary kill bonus. The player can also enter any Item even if it is already max level. If a player turns off Rasetsu Mode, the stats of any Item they leveled beyond the normal cap will return to the normal cap in Normal Mode. This can be reverted by switching back to Rasetsu Mode.

Disgaea 5: Alliance of Vengeance
Item level now goes up to 500, and the leveling system has been reworked. There's new Branching Routes, and they are freely changed by talking to an NPC in Innocent Town.

Item Leveling changes
Items don't gain levels by skipping stages anymore, as now levels are obtained as prizes from the Bonus Gauge after killing all enemies(1 level as the tier 0 reward, and another as tier 9). To compensate for this change, now there's no limit on the amount of floors that can be traversed per item.

Defeating Item Bosses doesn't grant a specific stat bonus anymore, and instead simply increases the item's Rarity value.

Level Sphere changes
Level Spheres now grant levels by destroying them, but the bonus has been reduced to 2 levels.

A new object called Level Fish can now appear, which has the old function of Level Spheres of granting levels if held at the end of a stage(either by killing all enemies or by using the Skip Gate). There's various tiers of Level Fish, each granting a different amount of levels.

Item Points
The Item Assembly can be accessed at any time, with the number of visit per item being limited by its rarity. Instead of using Mana or HL, a new currency called Item Points must be used to pay for the Item Assembly bills. Item Points can be obtained by redeeming items from the inventory, with items of higher rank and rarity being worth more points.