Horrible Game, don't waste your time! – Royal Defense: Invisible Threat Review

They've created the game to require you to spend money. With lack of spots to place towers, and too powerful enemies, it's impossible to get past the third world. Again, they designed this so you HAVE to spend money, and lots of it, in order to progress. So unless you're prepared to spend a substantial amount of money, don't buy this game. Gameplay is fun, but ruined by the creators.
Review by WorldTravels1865 on Royal Defense: Invisible Threat.