You can share previously created Custom Items via the Content Menu. If you don't have any custom items, there's a tutorial section on how to create them.
hey Orava my game some times crashes but not all the way it gets rid of the back ground and every thing else and i cant spawn anything. happens some times when like 4 ragdolls get killed or too many items
 "Mutilate-a-Doll 2"){kind=icon}
 "Demons Down Under"){kind=icon}
 "Kingdom Rush Frontiers"){kind=icon}
You can always find the countdown in the forum thread by clicking on the banner on the left in the main menu.