Game designers combined this wisdom to craft new user experiences that lead people gently into playing their games, starting with simple challenges that can be mastered quickly, and providing them with rewards for each hurdle cleared, while orienting them to the rules of the game and the environment in the process. They then ratchet up the level of challenge, as well as the degree of reward, in exquisitely refined increments (both of which they experiment a great deal with), so that users are hooked and get into flow.
