Yes, siege engines! I am still prototyping the implementation, and needed to model some of the build and craft in a test environment to get the feature right. May be a little while still but it is being actively worked!
The update is large, it is not yet known. By the way on a secret: added the military regime, here is a screen: http://cs624822.vk.me/v624822009/30ee8/tcz2MPhu6uk.jpg =)
In the upgrade room in the bottom right, you have to buy the shuttle bay, then keep upgrading your shuttle, and after the asteroid belt you can start collecting Radiation Potatoes! :D If you get stuck or confused try the tutorial button on the main menu! :D EDIT: When you beat the game now, you can collect radiation potatoes in the Play! area :D
 "The Perfect Tower"){kind=icon}
 "Auto-Combat!"){kind=icon}
 "King of Battle: Idle Castle Adventure Game"){kind=icon}
 "Athens Treasure"){kind=icon}
 "Crystal Cliker"){kind=icon}
 "Transport Defender"){kind=icon}
 "Realm Grinder"){kind=icon}
 "Dont touch my carrots!"){kind=icon}
 "Idle Raiders"){kind=icon}
 "Idle Potato"){kind=icon}
 "Ranchers"){kind=icon}
 "Gold City"){kind=icon}
 "Lasers & Dirt"){kind=icon}
 "Vault Rush"){kind=icon}
Thanks for the heads-up. I will take a look at this.