Eternium is an action RPG centered on three hero choices: Mage, Warrior, or Bounty Hunter. Its journey ranges from dark caves and forests to demon-held castles, snowy peaks, the moon, and the deserts and jungles of a red planet. That broad fantasy-and-science-fiction itinerary gives the adventure a deliberately varied backdrop without changing its core focus on fighting, exploration, and collecting gear.
Combat is described as responsive and fast-paced, with each class gaining access to about twenty skills or spells. Three companions add four abilities apiece, while leveling lets the hero learn abilities and improve attributes. Players can open chests for gold, gemstones, and equipment, then shape a Warrior around a shield or two weapons. Eternium begins with a simple setup and builds toward more tactical possibilities at higher levels, making character growth part of its design rather than a separate activity.
The store listing identifies Eternium as single-player, so its play format is a solo RPG adventure rather than a shared-session game. Its old-school RPG sensibility sits alongside spectacular combat effects and atmospheric music, pairing familiar progression with a colorful, far-ranging world.