Just been playing it, I'd say it's a pretty good time waster but I'm not entirely sold on it yet. The graphics are crisp (look like Retina to me) but they're super-basic, the game would be a lot prettier with a kind of Pac-Man CE neon haze to it.
The game is very much Pac-Man with a gun, your character shoots ahead of itself so you can shoot the various beasties. One way it differs from Pac-Man is that the mazes can have things that are more like 'rooms' rather than the pure corridor action of Pac-Man. TBH I'm not sure if I like this aspect of it, part of the fun of Pac-Man is the corridor running nature of it. By removing that, and the chase element (that I've seen so far at least) the game loses a lot of the brilliant tension that makes Pac-Man great.
The controls are fine though, as noted upthread it's pretty much the iOS CE controls, swipe to change direction.