For urban dwellers, the idea of three-dimensional Pac-Man, with malevolent ''ghosts'' chasing you around corners and ganging up on you at intersections, will have special resonance. Pac- Mania, however, disappoints for two reasons. First, the 3-D conceit allows you to see only a relatively small portion of the maze at a time, making it hard to tell how many ''power pills'' are left to be gobbled up or where your enemies are coming from. Second and this is what really sabotages the game the unresponsive control pad has Pac-Man slamming into walls at the exact moment he should be getting his little yellow heinie out of harm's way. B-

