GTA: Viking Land
The Vikings were among the toughest bunch of group back in the days. It is said that no one can match their strengths. But, there was a group more powerful than the Vikings back then, they were the monsters. And in time, the monsters decided to wipe out the Vikings. And this is there story. The game is played with a mouse and you need to erect some towers to defend your land. You make money from killing monsters. You can use the money to buy more towers or upgrade an existing one. After every level, you would earn rum and you can use the rum points to upgrade the abilities of the towers.