GTA: Age of Defense 3
Since the beginning of time, mankind is already into war. They want to expand their territories, so they could hunt more animals and they can't do that if the animals is not in their territory. As time passes by, new weapons were invented, but it is always for the same reason. People need to expand their territory. This game is played with a mouse and you need to win the war. Send some men to do battle. If you win then you can go to the next level and you'll earn experience points that are useful for unlocking new units.