Read more about Hilda the Paradox at: Wikipedia

Official Site: Arc System Works

is a 2D fighting game co-developed by Ecole Software and French-Bread. It received many updates for adjustments and characters.

The game has similar mechanics to Melty Blood, Guilty Gear and BlazBlue. It uses three attack buttons and a fourth one tied to the "GRD" meter. Attacks can cancel each other in any order, and into special and super moves. GRD is a tug-of-war mechanic to reward players for defense or offense, for them to use Shield, an enhanced defensive technique; Assault, an air dashing move; and Force Functions, a character-specific action serving as offense or a temporary buff. Whichever character has more GRD at the end of a cycle gains a temporary "Vorpal" buff, improving their moves and damage, and using Chain Shift, which cancels any move, resets the character to a neutral state and receives extra meter for the GRD. However, incorrectly guarding moves with Shield causes a state known as GRD Break, which locks a character out of any techniques with GRD. A traditional super meter known as the EXS Gauge fills up whenever players can attack or get hit. Characters spend half a meter for powered-up versions of special moves, or a full bar for Infinite Worth move, a high-damage super attack. When their health is below 30%, characters can use Infinite Worth EXS, an extremely strong super activated by pressing four buttons. A technique called Veil Off can be utilized if a character has more than half a bar of meter, giving a "burst" shockwave, sending the opponent and a powered up state for damage boost and temporary use of infinite super meter. For [st], the game adds new features, including Cross-Cast Veil Off, which characters with at least half a bar of super meter and Vorpal state can cancel combos into a Veil Off burst, and visual novel series Chronicle Mode.

Every month, a phenomenon called the Hollow Night brings forth invisible, immortal creatures called Voids. They feed upon a power known as EXS, which they gain by attacking humans caught within the Hollow Night. Though the attack results in death or Void transformation of victims, anyone who survives becomes an In-Birth, gaining the ability to control EXS. After surviving a Void attack, high school student Hyde Kido receives the power to summon Insulator, a magical sword killing In-Births. An immortal girl named Linne offers to train him with powers on the condition that when he is ready, he will end her life. Caught in a battle by others vying for control over EXS, Hyde finds a way to survive until the next night.

The original release of the game included ten playable characters, with two more being added post-launch. The roster currently has a total of 21 fighters as of the release of Under Night In-Birth Exe:Late [cl-r], with two of these being guest characters from other fighting games. The game has Japanese-language voice acting. Some characters later appeared in BlazBlue: Cross Tag Battle, where they received English voice actors for the first time.

Hilda the Paradox has not been a contender in any CBUB matches.