How to pass level 21 of Defending Carrot 4? The tool used in this level is the electromagnetic tower. Just place the electromagnetic towers all over the map, but the start is the key. Here is the guide for clearing the 21st level of Defending Carrot 4.
1. First place 4 electromagnetic towers on the right side to clear the obstacles.
2. Place electromagnetic towers in the middle position on the far right and below to clear obstacles and monsters.
3. Constantly place electromagnetic towers according to the location of monsters.
4. The electromagnetic tower is very powerful and can be cleaned quickly.
5. Finally, upgrade the electromagnetic tower on the map and pass the level successfully.