Thank you for finding the ROC Defense.Summon heroes randomly or choicely to block enemies.Combining and upgrading different heroes, enjoy defending strategically.■ Each hero uses a special skill!- Acquire mana during battle and use skill.- Use a variety of skills, such as attacking an enemy or buffing the same side to strengthen it.■ Various artifacts!- You can enjoy defense more strategically by attacking enemies or by creating energy balls around heroes.- When an artifact is leveled up to a certain level, a strong option is opened.■ Hero Growth System!- You can level up the hero and mount various options.■ Stage gatekeeper, boss!- You can meet the boss on every 15 stages.- Try targeting the stage boss with your own strategy.■ Powerful world boss!- If you find the World Boss by searching, all users can challenge.- Catch the World Boss Together! The high-level world boss is very powerful.■ Stage Occupation System!- Challenge the Occupy Stage and achieve a high score.- Get special benefits by achieving the highest score.