The keyword -excessm- is not a typo or a random tag; it is a specific ROM patch or difficulty modifier applied to the main executable. In the Oneshota community, "excessm" stands for Excessive Massacre Mode.
Activating this modifier (usually by renaming a .dll file or adding a launch parameter) triggers three fundamental changes: Oneshota Swordplay ACT- Hagokoro -v1.06- -excessm-
v1.06 is a significant patch. Based on excessm’s patchnotes (translated and inferred): The keyword -excessm- is not a typo or
Excessm has a distinct, high-polished anime art style that stands out in the doujin scene. Bug Fixes:
The game features a lightweight RPG system. Defeating enemies yields currency or experience points that can be used to upgrade health, attack power, or unlock new moves (such as a rising slash or a dodge-counter).
The final boss, known only as "The Grief," has a grab attack. In vanilla v1.06, the grab does 40 damage. In -excessm- , the grab does 100 damage (instant kill). Furthermore, the boss's third phase introduces a screen-wide projectile bloom that mirrors Ikaruga's polarity system.
Pro-tip for v1.06 excessm: Equip the "Lonely Idol" accessory (found in Stage 1 secret wall). It reduces projectile damage by 50% but makes melee attacks hit you twice as hard. Since The Grief uses only projectiles in Phase 3, this accessory turns the final fight from impossible to merely unfair.