Stair Rush is a fast-paced hyper-casual runner where your character automatically runs forward on a narrow track filled with obstacles, blocks, and platforms. Your goal is to collect tiles, build stairs, avoid obstacles, and reach the finish line. The more tiles you collect, the further you can climb, and the higher your score will be. Each level increases difficulty with tighter paths, moving obstacles, and bigger challenges. Players must react quickly, time their moves, and keep their balance to survive the course and complete the level.