Oniken: Unstoppable Edition

After a global war leaves humanity diminished, the military organization Oniken rules over the survivors. Zaku, a ninja mercenary, joins a small resistance movement and fights its forces.

Play through side-scrolling stages by jumping, attacking with a sword, and using grenades. Sword upgrades can extend your attack's reach and enable a brief berserk state; enemy and boss patterns reward observation and repeated attempts.

The campaign spans six missions with three stages each and more than 18 boss fights. It also includes a post-campaign mission starring Jenny, a boss rush, a Hardcore mode, secrets to find, and global leaderboards.

Players who enjoy the game often praise its 8-bit-style presentation, soundtrack, and cutscenes, along with its demanding action and memorable boss encounters. Several describe learning enemy patterns through retries as satisfying, while others find the difficulty, controls, or level pacing frustrating. Some also appreciate its focused, relatively short campaign.