Ironhide Game Studio has released the first teaser trailer for Kingdom Rush: Frontiers. The game is a sequel the popular tower defense game Kingdom Rush. The trailer doesn't reveal much, but it does show all the original turrets (Mage, Archers, Barracks, and Artillery) from the first game. Ironhide said the "bigger, meaner and better" sequel will be released this fall.
In the original game players use a combination of towers, magic and upgrades to fend off armies of goblins, trolls and other monsters. The game is set set in Medieval times, and is considered one of the best TD games released for iOS and Android devices. You can download the original iPhone version for $0.99, or the HD iPad version for $2.99.
Here is the official description from the Ironhide YouTube page:
Cities tremble in fear... armies gather for battle... reinforcements cry for freedom... a new adventure is coming!!! It´s a new world... a new threat... a new journey into the unknown!!! Bigger, meaner and better; Kingdom Rush: Frontiers is coming... Prepare yourselves!!!