Worst Moon

Worst Moon is a difficulty modifier in Battle Arena which can be enabled by equipping either the Invisible X Invisible Ally or the Worst Moon Gem (if you equip both of these items at once you will enable Apocalypse instead). Worst Moon can be recognized by a white moon in the top right corner of the Battle Arena screen as well as a darkening of the environment.
Unlike Casual and Hardcore difficulties, Worst Moon does not modify Monsters very much - instead, it increases difficulty by reducing the fighter's power directly.
== Negative Effects ==
The following negative effects occur while Worst Moon is enabled (all reductions are applied before hard caps are imposed):
* Rage Depletion is increased by an additional +100%
* Health and Mana are raised to the 0.98 power, rounded down
* Max Spirit is multiplied by 0.8x, rounded up
* HP and MP Recovery are raised to the 0.95 power, rounded down
* The following stats are multiplied by 0.5x, rounded down: Double Hit, Hit Chance, Dodge Chance, Crit Chance, Damage Resist %, Negate Effect Chance, Boss Damage, Non-Boss Damage, Instant Kill Chance, Magic Resist, Potion Efficiency, Poison Chance, Blind Chance, Weaken Chance, Stun Chance, Blind Effect, Weaken Effect
* Reflect Damage, Magic Reflect Damage, and Poison Damage are multiplied by 0.2x, rounded down
* Crit Damage above the base 100% is multiplied by 0.25x
* Flat Damage Resist is raised to the 0.95 power, rounded down
* Damage is raised to the 0.95 power twice. Rounding down occurs after each operation
* While A:TG Level is below 8999, fighting a monster with an A:TG Level above the user's current A:TG Level imposes an additional -5% reduction to Damage and Hit Chance
== Positive Effects ==
The following positive effects occur while Worst Moon is enabled:
* Items looted by use of a Collector's Pendant gain 4 bonus tiers
* Drop Rate stat is multiplied by 1.6x
* Arena and A:TG EXP gains from killing monsters are multiplied by 1.3x
* Pixel and Coin gains from killing monsters are multiplied by 1.6x
* Special [S] and Infinite [I] Bonus Rocks can appear instead of normal Bonus Rocks
* Chip Drop Chance is multiplied by 3x (the cap on Chip Drop Chance still applies)
* While mining on the Main Path, the epic version of Secret Crystal has an additional +4% chance to spawn
* Epic Monsters appear more frequently in many areas (see Area-Specific Effects for exact changes)
== Area-Specific Effects ==
The following changes to areas occur while Worst Moon is enabled:
* Secret Dungeon
** Score is increased by 700 points
** On completion, the fighter gains Unobtanium equal to (finalScore / 50) + ChestsOpen * 10, all rounded up
** All armors looted in the Secret Dungeon gain 3 bonus tiers
* Epic Pyramid Battle (Dark Pyramid): Raid time is increased by 40 seconds
* Defend Mission: Raid time is increased by 220 seconds (3 minutes, 40 seconds)
* Special Arena: Raid time is increased by 60 seconds (1 minute)
* Prehistoric Mission
** Entry Room time is decreased by 45 seconds
** Final Challenge Time is Increased by 75 Seconds
* THE MEGABOSS's Revenge
** Raid time is increased by 90 seconds
** Earrings acquired in this raid expire in 30 days/never expire (Casual/Hardcore)
* The Corruption: Corrupted Giant Treeman appears instead of normal Corruption monsters.
* Special Training Zone: Battle Point gain is multiplied by 5x
* Endless Dungeon
** Demon Slayer armor pieces can now be obtained on all floors which do not end in 1 or 6, starting with Floor 10.
** Armor pieces looted in the Endless Dungeon gain 10 bonus tiers
* Technical Battleground: Point gain is multiplied by 1.6x
* Tower of DOOOOOOM
** Score multiplier is increased by 150
** Raid Time is increased by 120 seconds (2 minutes)
* 2011: Triangle Land: All monsters are epic monsters.
* Ye Olde Pub: While on an Impossible Ascension, killing The Ascendant grants The Ascendant Invisible Ally.
* Triangle Hideout: Arena and A:TG EXP gains are multiplied by 2x