One Gun Guard

One Gun when Off (一炮当关; pinyin: Yī pào dāng guān) is a Brain Buster in Castle in the Sky in the Chinese version of Plants vs. Zombies 2. In it, the player controls a machine which fires lasers at the synchronized patterns of flying zombies. The goal is to gain enough points to pass the level, and in that sense, it is similar to Cannons Away. The player also gains sun they can use to use two upgrades.