Jurassic Feud is a standalone spinoff of Catapult Feud, and the goal of both games is the same: Knock down all of your opponent's warriors and be the last one standing.
In short, choose your warriors, then use your bricks to build a prehistoric-style fortress on your player board. Place your warriors on top of your fort, then take turns using your dino-catapults to launch boulders in an attempt to destroy your opponent's fortress and knock over their warriors. Each turn consists of four phases: tactics (playing an action card), aim, fire, and clean-up. When all warriors of one side are knocked over, the battle is over. The winner must have at least one warrior miniature standing upright.
Jurassic Feud is a standalone game, but can be played with Catapult Feud and its expansions.
—description from the publisher