Fractional Invincibility

In intense action games, from classic platformers to punishing modern RPGs like Dark Souls, surviving a massive enemy attack often relies on a deeply counterintuitive maneuver: rolling directly into the swinging sword. Visually, the blade passes right through the character's body, yet no damage is taken. This is the magic of the "e;Invincibility Frame"e; (I-Frame). Developers realized early on t...