Did you like Pacman? If the answer is no, then it's time not well spent to invest in Ms. Pacman.
I won't bore you with a review of Pacman because, frankly, if you're not sure whether you like Pacman you don't belong on a video-game website. Even if somehow you have forgotten if you like Pacman you can do a search on the internet and be playing a Java version of the classic within 30 seconds.
This version isn't much different than the original classic, however aged it has become. Don't be expecting the next Gears of War here, but at least expect to enjoy yourself. One extremely large difference in Ms. Pacman was that the ghosts don't follow a track path. In this game they actually use a sort of AI that allows them to forge their own paths (thereby preventing the player from memorizing the ghost paths and strolling right through the levels without thought involved).
Overall: A fun game, but only for a few minutes until you realize how long ago we all stopped PLAYING Pacman.