Play Starjack IO online with thousand players all over the world at happywheelsaz.com! You'll start on your homeworld before you launch a campaign to rule the galaxy in this addictive war. Wisely deploy your ships to take over new planets, especially if they have a cannon or an EMP. Just be sure to protect your homeworld while you try to invade those of your opponents. If they capture it, your dreams of interstellar conquest will come to an untimely end.