iOS: https://itunes.apple.com/us/app/kingdom-rush/id516378985?mt=...
iOS sequel: https://itunes.apple.com/us/app/kingdom-rush-frontiers/id598...
Android: https://play.google.com/store/apps/details?id=com.ironhidega...
Online: http://armorgames.com/play/12141/kingdom-rush