NightmareZ is a retro-styled, side-scrolling platform action game set in a world overwhelmed by darkness, where zombies and evil spirits have taken control. Players follow Razor, a demon drawn into battle against those forces after losing his family to an attack by evil spirits. Guided by a saint, he seeks to destroy the enemy and uncover mysteries surrounding his demonic power and missing brother. That story-led premise gives the journey a personal thread amid its apocalyptic setting.
Progress takes Razor through distinct environments, from Mountain cave and the Land of Flora to the Dark City and the Cave of the Hell. The game describes thirteen scenarios, with deadly traps, formidable enemies, power-ups and secrets to find. Combat combines a single-firing mode with two named techniques, Multiple Shooting and Thunder, while keys open special locked doors. Ammo, health and energy boxes provide equipment along the way, and the challenge is explicitly framed as hard to master. Saws and blades make hazards part of the route, alongside four bosses.
NightmareZ is listed as single-player, so its format centers on one player’s progress through its story and action rather than shared multiplayer play.
