Blue Laser

(Blue Laser) is the sixth Defense in ScrapTD. It's the sixth pursachable in the game and costs 200 bricks to unlock.

Strategical use
This defense gives a big help against ground enemies, it even can defeat the last ground unit (Mobile Delivery) when you got 10+ of them if both are at same level), it's usually combined with Defense 5.

Trivia

 * It's the last tower in the game.