Play Altered Beast [Gaowei Translation] (JP) [ACT] Online Free

Altered Beast is a legendary side-scrolling action game originally by SEGA, ported here to the NES/Famicom. Players take on the role of a fallen warrior resurrected by Zeus to rescue Athena from the underworld lord Neff. The game’s standout feature is the ability to collect Spirit Balls to transform into powerful beasts like a Werewolf, Waredragon, or Werebear—each with devastating attacks. This Gaowei-localized version brings the iconic 'Power Up!' experience to Nintendo fans, featuring all five mythical stages and intense boss battles.