Korea is the first stage of The Aku Realms.
- The enemy base is an Aku Altar.
- Infinite Aku Doges spawn after 6.67 seconds200f, delay 20~23.33 seconds600f~700f.
- Infinite Doges spawn after 13.33 seconds400f, delay 20~26.67 seconds600f~800f.
- 2 Aku Doges spawn after 33.33 seconds1,000f, delay 3.33~4.67 seconds100f~140f.
- Infinite Aku Doges spawn after 133.33 seconds4,000f, delay 13.33~16.67 seconds400f~500f.
This stage forces your units to be at level 1, so it is not to be taken as a free victory. Since the Cat Base and the Cat Cannon are not affected, use the base to tank hits while you build up attackers, then clear most enemies with the Cannon and let your cats advance to the enemy base. Even just the basic Cat, Tank Cat and an Area Attacker, such as UFO Cat, are enough to take it from there, but the more units you have the better, especially due to how long it could take you to destroy the enemy base.