The war of orcs and humans last for decades. You beat orcs, but they come again and again. Hit orcs with your mighty swords and clear your lands.
Orcs versus humans is the classic genre of computer games and people love to play them. If you can't spend much time on complicated games than this one will fit you most. Control the human soldier and find the best way to reach the orc scum before they see you. When they are near strike them with your sword and search for another orc to kill.