Vaal side area



A Vaal side area or corrupted area is a randomly-generated side area indicated by a glowing, beating heart and swirling ribbons of blood. Every corrupted area contains a boss, guarding a Vaal Vessel that drops Vaal Skill Gems, Vaal Fragments, and corrupted equipment. One Vaal skill gem is guaranteed to drop. Near the vessel there is a Vaal Letter, which provides Vaal-related lore. The prophecy will guarantee a corrupted area be spawned.

Corrupted areas have modifiers, similar to end-game maps, which substantially increase their difficulty. Since corrupted items cannot be modified, the modifiers cannot be rerolled. Corrupted areas found in act zones spawn have 1 to 2 affixes (magic), while corrupted areas found in maps spawn with 4 to 6 affixes (rare).

Due to the small size of corrupted areas, league mechanics are generally disabled from spawning in corrupted areas during challenge leagues. Masters, more corrupted areas and Trials of Ascendancy also cannot spawn in corrupted areas. Notable exceptions which CAN spawn in them include Silver Coins, Strongboxes, Shrines, Rogue exiles and Tormented Spirits. Many of the corrupted area bosses were also formerly Invasion bosses.

A Vaal fragment can be used in the Map Device to generate a random Vaal side area.

List of Corrupted Areas
Corrupted areas in act zones spawn based on the zone it spawned in. Corrupted areas found in maps are chosen randomly.

Version history

 * Fixed a bug where one of the new Vaal Side Areas didn't actually look like a Vaal Side Area when you went inside.


 * Vaal Side Areas found in maps and those created by placing individual Vaal fragments in the map device now count as map areas for the purposes of map drops and other mechanics which interact with map areas.
 * They now generate as 'rare' areas, meaning they will always have 4 to 6 modifiers on their area.
 * Vaal Side Areas opened via placing an individual fragment in the map device are now 1 level higher across the board.
 * The values on the area modifiers are now similar to those found on maps of a similar level.
 * Added many new mods that can appear on Vaal side areas, including several that can influence the items and rewards found in those areas.
 * Elemental and Physical Damage Reflection modifiers can no longer appear for these areas.
 * Increased the number of monsters found in all map-level Vaal side areas.
 * Monsters normally found in Incursion encounters will now also be found in Vaal side areas.
 * Side area bosses now have Life pools similar to other unique monsters found in maps.


 * Maps now have a 10% chance to contain a Vaal Side Area.


 * Introduced to the game.
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