Royal Defense: In

Defend the fortress as trolls are here to raid your lands! Build towers, earn money, collect crystals

and upgrade your spells – the enemy shall not pass! Repel the aggressor!

Game Features

Royal Defense - Invisible Threat is well-known Tower Defense game

40 different progressively challenging levels

17 kinds of creatures

12 kinds of towers and structures

System Requirements

OS: Windows XP/Vista/7/8

CPU: 600 Mhz

RAM: 512 MB

DirectX: 9.0