Kingdom Heroes is a free-to-play MMORPG developed by USERJOY Technology and published by Aeria Games.

Kingdom Heroes will allow players to recruit and customize NPC soldiers to create their own armies, do battle ship-to-ship, defend player cities, and conquer enemy strongholds, using all variety of ships, mounts, troops, and siege engines.

The game also includes a robust character customization system, branching classes and talent trees, a player-based economy, instanced battlefields, and global PvP events where players vie for control of player-controlled territory and cities.