T-Rex Runner is a simple, endless runner game featuring a pixelated Tyrannosaurus rex. Players control the dinosaur as it runs through a desert landscape, avoiding obstacles like cacti and birds. The game is activated when the internet connection is lost, providing entertainment during offline moments. The objective is to achieve the highest score possible by jumping over or ducking under obstacles. As the game progresses, the speed increases, making it more challenging. The minimalist design and straightforward mechanics make T-Rex Runner accessible to players of all ages.