I felt that the Mac didn't have a Pacman game that was good enough to fit my taste. The old MacMan doesn't work under MultiFinder, and the newer MacChase doesn't have any really good animation. (No little chewing character or nasty-looking enemies.)
MacChase has one thing that is really good: the ability for the user to edit the game layout from inside the game. This feature is also in Bachman, but only in the registered user version. What you have is the complete game for playing the built-in levels and any Bachman scenario files, but the game does not include the editor. Registration is $15 (100 Swedish crowns or equivalent). Cash, please - it is very expensive for me to cash in American cheques.
The game mechanics is as a Pacman-style game is supposed to be: you control Bachman in a maze, hunted by nasty enemies while you try to clear the level from all the small markers laying everywhere. If an enemy can touch Bachman, the poor Bachman will be eaten, but there are of course power pills ("turners") to enable Bachman to eat the enemies instead.
However, Bachman has some features that you might not expect. The graphics is "pseudo-3D", not as flat as classic Pacman games. There are bonus objects ("overdrives" and "treasure chests"), teleporters, plus Bachman's ability to shoot biscuits at the enemies to delay them (but not to bypass them). Well, you'll notice all that when you play.
Do you wonder why it is named Bachman? If you consider the names of some objects mentioned above, and the music played between levels (hint: "Not Fragile"), you might find it as logical as I do.
 
The three-dimensional graphics are awesome.
Bachman is by far the best Pacman style game out there. The fell of this game is spectacular. Going beyond that the graphics and playabilty are superb. This variety of the levels is also worth noting. There is always a challenge waiting on the next level. And, when you register the program you get the full version that has the level editor enabled. I am against the idea of crippleware, however, in this case the game is not crippled in any way. The level editor is just a bonus for registering the game.