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Aliens (a.k.a "A.L.I.E.N.S") is an early B&W space shooter arcade game for Macintosh. It doesn't seem to feature any sound effect, but it features a 1 or 2 players mode and a top 5 high score list. Unfortunately, the "Instructions" button doesn't do anything, because the file seems to be missing, but it plays with the mouse, similar to any other space shooter game.
See also almost a decade later in the same genre: Space Junkie
Aliens.sit (9.13 KiB / 9.35 KB)
Aliens v1.0 / compressed w/ Stuffit
Note: This runs too fast on any Mac made after 1986. Thankfully, the Mini vMac emulator can be set to speed 1X, at which it runs great!
Emulating this? It should run fine under: Mini vMac