Brewster uses an isometric viewpoint of a maze of hedges to differentiate his game from all the other clones. He uses regular Pac-Man style ghosts, though.
Movement and animation are a little sluggish, but the controls work well enough. Haunted Hedges is a reasonable attempt at Pac-Man on the Spectrum, but isn’t smooth enough or precise enough to be taken seriously. I don’t think the maze changes either. Very basic stuff, but still playable.