The player controls a small square moving along a line that changes direction without warning. Each turn requires precise movement: hesitate even a little, and the figure begins to slip, ending the path. Gradually, the route becomes more complex, with sharper turns, requiring more careful attention to the rhythm of movement. The game is based on a simple principle: stay on the line as long as possible, reacting promptly to changes in trajectory. This process gradually develops sustained attention and the ability to quickly assess the shape of the next turn. Each launch becomes an attempt to go further than the last and keep the figure on a thin, constantly changing path.
Guide a small square through shifting turns and sharp curves