Re-ACT
An expansion to the original game, featuring an 'Arcade Mode' whose storyline takes place after the original Melty Blood. The expansion made numerous changes in regards to character balance and to remove many infinite-combo sequences. Also, new movesets were created for the doppelgänger characters, whereas in the original, most of these characters had nearly identical movesets to their counterparts. It also made changes to the game's mechanics and added several new characters, though only two are playable the other 4 NPCs:
Len
Satsuki Yumizuka
Neko-Arc (non-playable character)
Executioner Ciel (Ciel holding the Seventh Holy Scripture, non-playable character)
White Len (non-playable sub-boss)
Aoko Aozaki (non-playable boss)
The final update to Re-ACT, Final Tuned, adds several features designed to allow the game to be configured to resemble the gameplay of Melty Blood: Act Cadenza. It also adds a large number of gameplay tweaks and slightly updated animations.
The most notable of the new features are:
The inclusion of a new, analog-friendly controller setup
New configuration options that lets players assign multi-button commands to individual buttons
The ability to alter and adjust many of the game's internal variables (via new interface options)
Four new colors for each player
