Tunnel Ball invites you to guide a solitary sphere through an endlessly coiling pipe, where every twist and turn heightens the trial of your focus and reflexes. The only scoreboard that matters is the distance you travel, and for those who prefer a more structured trial, an optional challenge mode presents you with a selection of fixed tracks to sharpen your technique. As you roll forward, glittering diamonds appear; gather enough and you’ll unlock fresh sphere designs, each tiny victory pushing you farther up the global leaderboards and marking you as a master of the chase.