Corrected entry: When Charles Jefferson and his little brother show up in the Arcade area of the mall, Spicoli and his little brother first leave toward the camera, at this time there are only 3 arcade games against the wall. After Charles asks Demone about some concert tickets, you see Spicoli and the brother playing a PAC MAN game which has appeared out of nowhere as a fourth game. (00:27:00)
benmar4611
16th Dec 2013
Correction: There is no mistake. These are two different areas that are shown. You can tell because the first wall with the 3 games has a giant "mall arcade" banner on it and Pac-Man is next to Space Invaders and there's no banner.
Bishop73