Programming Game Series On the Brink is the first in a series of games designed to build the mental skills needed to fully grasp the concept of coding. All of the games are screen-free for a unique, unplugged play experience. Each of the 40 On the Brink challenges contains a map of coloured squares. Each colour has pre-programmed moves for your Robot to perform. Use your problem-solving skills to determine the moves that will successfully get your Robot from start to finish.