City Defense City Defense is an online Kids game, it's playable on all smartphones or tablets, such as iPhone, iPad, Samsung and other Apple and android system. City Defense is a fun city base defense game. The city defense war has begun, enemies are coming from all sides. Crowd control is necessary. Immediately draw up defenses, clone armies and protect the city from hateful enemies. Also, you can use skills like super missiles and super soldiers to help you win. Come and join us to stop this riot and build a safe city base defense!