Space Invaders

This Space Invaders is one of the many small Classic Mac homages to Taito's 1978 arcade landmark, in which a lone cannon at the bottom of the screen tries to thin out descending ranks of aliens before they reach the ground. It is a compact 68k application built for early black-and-white Macintosh hardware.

Gameplay

The mechanics follow the original closely: the player slides a base left and right, fires upward, and chips away at formations of marching invaders that speed up as their numbers fall. Bunkers offer temporary cover, and a flying saucer occasionally crosses the top of the screen for bonus points.

Mac implementation

The game uses the mouse for movement and firing, a common control scheme for early Mac action ports built with development systems such as Rascal. The black-and-white sprite work fits comfortably on a 9-inch compact Mac display.

Distribution

Versions of this Space Invaders have circulated for decades through Info-Mac, shareware compilation CDs, and contemporary preservation archives. File sizes are tiny and the application runs on essentially any 68k Macintosh under System 6 or System 7.

Why it persists

It is preserved as part of the long tail of unofficial Space Invaders ports that documented how hobbyists adapted arcade classics to early personal computers.