There are many things that Not Pac-Man isn't. It's not, for example, the Cuban missile crisis. It's also not a car. It's definitely not the Higgs-Boson particle. And I can't begin to tell you how much it's not a delicious, multi-tiered birthday cake with "Craig Is Best And Handsomest And Smells Lovely" written on it. So what I want to know is why it claims to not to be the one thing it most closely resembles? Pretentious Pac-Man.
Your eyes will definitely agree with me it *looks* an awful lot like Pac-Man. You might even sing to yourself "It's starting to look a lot like Pac-Man", and you would be correct. This is Pac-Man, Excact-Man, Copy-Cat-Man, but with one major difference: you move the screen instead of directly directing the little pie. You tilt the world and watch Pac-Man and his ectoplasmic enemies swirl around, bouncing all over (as the site puts it: "because of physics"). It turns the game around, removing the tension and replacing it with silly, giddy lurches in direction. This is what puts the "Not" in the title. It has all the visual and aural elements, and you still have the same goal, it's just the control scheme is completely different.
The best bit is the control schemes. Keyboard? yup. Mouse? Hells yeah! Joypad? *fistbump* Joystick? Man, you know you're stuff. Steering wheel? All of the yes. That last one is the reason the game exists, by the way. I sadly don't have one to test it out, and I suspect most people won't. If you do, and you want try a fun reworking of a classic, then you have my permission.
Ta very much, Indiegames.