To achieve high scores in pacman game, focus on mastering the maze and optimizing your strategies. Begin by learning the maze layout and positioning yourself to collect all the pellets while avoiding ghosts. Prioritize eating the large power pellets to turn ghosts blue, making them vulnerable and easier to catch for extra points. Plan your routes to maximize pellet collection and avoid getting trapped. Use the maze’s corners to your advantage to escape ghosts and strategize your moves. Practice consistently to improve your reflexes and timing. With patience and practice, you can consistently achieve higher scores.