It’s our great pleasure to let you know that we are releasing an update to Star Wars: Empire at War / Forces of Corruption Gold Pack as of today. Building is crucial in a war, as it effects the rate of units as well as strength of economy and tactical defences against invasion. Ion Cannon: Similar to the Imperial Hypervelocity Gun, this weapon can help defend the planet during a space battle. Star Wars: Empire At War - Full Mod - Beta 2 Full Version 28 comments. You should build both hypervelocity guns and develop the space stations on battle worlds, ie worlds that border the enemy. For more check out the Planet Upgrades page.