Pacus

Description of Pacus program from Softdepia.com:

Pacus is an amazing remake of famous PacMan, one of the most popular computer games ever.
Among standard features Pacus provides:
simple yet handsome graphics;
great sound effects and exciting music;
bulk of various interesting levels (try to pass them all!);
extended number of enemies and game bonuses;
two players mode at one desktop PC.

Pacus is a "Free to try" program. You can download and try it for an evaluation period.