The original 2010 arcade experience in 4:3 aspect ratio.

The modern Switch release includes three distinct versions of the game:

Slower movement, but focuses your option's power into a concentrated attack. Phantom Form (Soul-shift):

In this form, you are generally . Taking hits in Shin mode reduces your energy gauge instead of a life. The "Shin" Mode Katana System

Activated by pressing the once the Guiding Gauge (green bar) has energy.

This mode replaces the "reflect" system of the arcade version with an aggressive scoring and bullet-canceling loop: Akai Katana Shin Review - Nintendo Switch

This guide for on the Nintendo Switch covers gameplay mechanics, scoring systems, and technical details for the updated release. Game Modes Overview