Stone Sling was one of the games for the Philips Magnavox Odyssey², a console from the 1970s in the 8-bit home video game console era. The game allows for two player simultaneous gameplay where both players have a fortress as well as a catapult used to fire each other. With each hit the fortress' size decreases by a bit. However sometimes if your aim is off, the catapult will miss the fortress and instead hit one of the opposing soldiers. In the United States it was sold under the title Smithereens!. Source: Wikipedia, "Stone Sling (Videopac game)", available under the CC-BY-SA License.