Pac-Man Collection

Pac-Man Collection is a compilation of Pac-Man, Pac-Man Arrangement, Pac-Mania, and Pac-Attack on the go. What more can you ask for?

Unused Text
Pac-Mania has some debug-related text, including a sound test and a "3D TEST": SOUND TEST VOICE NUMBER PSG  NUMBER FM   NUMBER AUDIO 3D TEST

Pac-Mania also has a disclaimer about international copyright: THIS GAME IS FOR USE EXCLUSIVELY IN JAPAN. THE SALE, EXPORT, USE OR OPERATION OF THIS GAME OUTSIDE OF JAPAN MAY BE A VIOLATION OF INTERNATIONAL COPYRIGHT, TRADEMARK AND/OR OTHER RELATED LAWS SUBJECTING THE VIOLATOR TO LEGAL PENALTIES.

Regional Differences
The Japanese title screen is missing the "Licensed by Nintendo" and has less shadow behind the logo.

Pac-Mania has a different logo in the Japanese version, making the US one look lame.

The US version has tips, while the Japanese version has hints.