The game plunges you into the nano-world, where even the most microscopic particle has its influence. Your direct duty is to preserve the life of nanobots that should unharmed reach the exit. Before nanobot will begin to move, you must program its route, using the line. Paving the route should take into account the width of corridors and traps, buttons, and the movement of other bots. When all the preliminary preparations are completed, you can switch to another mode of the game. In another mode, nanobots will move on track.