The highly anticipated 1.15 update for the popular iOS tower defence game TowerMadness has just landed on the App Store.

The update features three new maps for the Final Resistance campaign: Runway and Crescent, which are both rated medium difficulty; and Spotted, which is rated hard.

Developer Limbic has also announced, by popular request, the introduction of a new upgrade for the game's guided missiles.

Dubbed the 'Energy Pulse Missile', the new upgrade will feature increased range, splash radius, and damage, as well as delivering 100 per cent damage to aliens regardless of their armour.

TowerMadness for is available now for £1.99/$2.99 on iPhone [buy] and £4.99/$7.99 on iPad [buy].