Altered Beast - Guardian of the Realms

Developer: Sega

Altered Beast - Guardian of the Realms on GBA brings the arcade classic's hulking transformations to a portable beat 'em up. Players punch through mythic stages, collecting spirit orbs to unleash werewolf, dragon and other powered forms while facing relentless grunt waves and tough bosses. Tight, two-button combat and crisp 2D sprites capture the old-school feel, trading sprawling arcade visuals for handheld immediacy. Expect short stages, punishing patterns and satisfying boss encounters — a compact, nostalgic challenge that rewards timing and persistence for fans of classic side-scrolling action.