I have the trial version. It's good. PacMan mechanics with pretty artwork. It's continuous, although since it's only 3 minutes before it times out, I don't know if eventually it gives you new mazes. (I think it does, from what I read.) As you eat up everything in sight, new areas of dots and fruit will pop up in the maze. You then go after those, and so on. At $10 without having to leave this chair, it's tempting.
Edit: Having read the review, now I'm not as tempted. All the modes are timed, with emphasis on scoring big points in a short time. I had assumed the meat of the game was still endless survival. I'm in no hurry here. I'll just hold off for a bit until I get a better feel for where my dime would be going.