Scramble was released in 1981 and was the first arcade game I played. It was the worlds first multi-level shoot-em-up and a genuine classic.
It's also damn hard! Frogger was released about the same time and the hardware has only minor differences to Scramble.
A guest project by Arnim Läuger. A PacMan style maze game (eat the dots, avoid the insects) with some added extras including revolving wall sections.
According to KLOV this game ranks #49
in popularity based on ownership records.