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One plays as a prehistoric beast in the monochromatic Chrome Dino Game (Original) setting. An unexpected stop might occur at any point throughout the run.

The game originated as a surprise Easter egg hidden within the Chrome browser, appearing whenever the internet connection dropped. Moments of waiting transform into an endless run. A monochromatic desert landscape stretches infinitely ahead, shifting subtly between bright daylight and dark night. As speed increases over time, the window for reaction shrinks. The only goal is to keep the dinosaur alive without hitting obstacles like a single cactus and flying reptiles at varying altitudes. The game has no fixed finish line; only an ever-increasing distance and a personal best await you to break.
On a computer, the Space bar or Up Arrow makes the dinosaur leap over ground obstacles and low-flying creatures. The Down Arrow allows it to duck under high-flying reptiles. On mobile, a simple tap on the screen triggers a jump. Everything hinges entirely on the timing of your input. Jumping too early or too late results in an immediate collision. Players gradually learn to anticipate the distance and speed of each type of obstacle.