Gameplay
The goal is to break through the other three players' walls and hit the player's (or computer's) icon (kings or knights) contained inside the fort. The last player left without having his icon hit gets 1 point. There are four forts (one in each corner of the screen), distinguished by the four colors orange, light green, turquoise blue, and purple. Each player has a shield that deflects the fireball that bounces off all four sides of the video screen. Players can capture and catapult the fireballs at opposing castles using their shield control and "power stone" push button.
Read more about this topic: Warlords (1980 video game)