Through its dominant black and white color scheme, one-on-one combat, and sword-wielding protagonist, it evokes Japanese samurai films. It also employs a novel progression system in its run-based structure that rewards experimentation and learning from your mistakes. More than just your powers of observation, Gurei also requires a deft hand and precise timing to make your way through its punishingly tough gauntlet of opponents. The more you play, the better sense you have of which boss orders are more favorable and which are an absolute nightmare. Gurei takes a growing modern genre and adds some novel wrinkles to it, creating an ultimately unique experience.