Royal Defense: Invisible Threat
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
OS: Windows XP/Vista/7/8
CPU: 600 Mhz
RAM: 512 MB
DirectX: 9.0
Royal Defense: Invisible Threat
and upgrade your spells – the enemy shall not pass! Repel the aggressor!
Royal Defense: Invisible Threat - 1
Royal Defense: Invisible Threat - 2
Royal Defense: Invisible Threat - 3
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