The battles haven't stopped raging in the kingdom! Invisible Threat contains three new episodes for true tower defense fans. We've also added new enemies to diversify the game. You'll need to use new tactics to beat them! Key Features • Three new episodes Wasteland – orcs have hidden amongst sharp and dangerous cliffs. Fiery Plateau – destroy all the enemies on a burning plateau. Mystic Valley – defend yourself against mystical creatures in an enchanted forest. • Four new units, each with its own unique abilities. Skeleton, Necromancer, Fire Elemental, Nature Elemental. • Five new achievements. Challenge yourself with exciting trials!