GTA: Viking Warfare
Vikings are a group of hardy individuals that take whatever they want from the village. Most of the time, they take treasures and when they got it, they don't want to share it with others. When another group plans on taking it away, you can expect a hardcore battle between the two groups. The game is played via mouse and the idea here is to stop the incoming vikings from taking your gold. You earn money from every enemy that you kill and you can use that to buy defenses or upgrade the existing ones. The game gives you star depending on the difficulty of the game. You can use the stars to improve the skills.