Corum is a Korean-made action role-playing game set in a medieval fantasy world. A demonic warlord is sending his minions to ravage towns and kill everyone standing in their way. A warrior named Beat, whose home village was destroyed and its inhabitants massacred, swears revenge and embarks on a dangerous journey.
The game world consists of interconnected screens, including vast wilderness areas populated by enemies. The protagonist engages foes in action-based combat; his moves include a regular attack, active blocking, and a dashing attack. Experience points and gold are awarded for defeating enemies. The hero can use three types of weapons: swords, halberds, and bows. Each weapon has its own fighting style and increases in proficiency level when used repeatedly.