StarJack .io is a strategic entertainment game that conquers the galaxy. Your mission is with other players to build planets. Once you have a large number of spacecraft, you can invade a planet controlled by enemies. Use different types of technology to protect your base or attack your opponent and try to take them all unexpectedly to dominate the entire galaxy. The more spacecraft and planets you own, the higher your score, so be smart and wait for the right time to attack. Let's play with friends.