The offline dino game, also called the "Chrome Dinosaur Game," is a pixelated, 2D side-scrolling game built into the Google Chrome browser. It activates automatically when the browser detects there's no internet connection. In this game, players control a cute dinosaur character who must jump over obstacles like cacti and avoid flying pterodactyls by either jumping over them or ducking beneath them. The longer the player survives, the faster the game's speed increases, adding to the challenge. The objective is to achieve the highest score possible by surviving as long as you can without hitting obstacles. It's a simple yet addictive game that has become a popular pastime for Chrome users during internet downtime.