The Defense tab is accesible by the "Defense" button on the top of the screen. In the Defense tab, you can manage the terraformation and colonization of planets, taxes, collect metal and crystal from asteroid's, turret defences, governers, access the Star Gate to the Ancient Battleground, and access the Alliance Stargate. Every hour a wormhole will pop up beside your Home Star System and the Trade Port. Here you will fight off robots, and get random resources such as metal, crystal, and metals. Occasionally you can recieve better items such as Radioactive Material. If the wormhole does not appear after 1 hour refreshing the page will make the wormhole appear.

Star Gate of the Ancient BattleGround is also known as ABG and can be found under button Defense