Rotating Grimace
Skibronx Runner is a running game with spontaneous challenges. Also, i found a free version online that keeps you on your toes with unpredictability.
You run through the city and avoid obstacles, and gather speed to go Fast.
Controls are arrow keys or swiping on mobile to move left, right, jump, or slide. The objective is to score as high as possible without getting hit.
Watch for hazards to stay alert and use quick swipes. Collect power-ups often to help avoid obstacles and increase your score.