Catalogue of Arcade Emulation Software - the Absolute Reference

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Space Invaders II (Midway, cocktail)

Space Invaders II (c) 03/1980 Midway.

Space Invaders II allowed for two player simultaneous competitive play (although both players could work together). Besides shooting the invaders, one of the goals was to destroy your opponent (either CPU or another player) and gain his ships!


Game ID : 851

Main CPU : 8080 (@ 1.9968 Mhz)

Sound Chips : (2x) Samples, (2x) SN76477 (@ 1.9968 Mhz)

Screen orientation : Vertical

Video resolution : 224 x 256 pixels

Screen refresh : 60.00 Hz

Palette colors : 2

Players : 2

Control : 2-way joystick

Buttons : 1


This game was a Midway in-house project, done by Joel Kreger. His name can be found in one of the game ROMs using a hex editor. This game runs on modified SI Deluxe hardware, with two sound boards; one for each player. Player 2's sound was a bit higher in pitch than player 1. The sounds of player 2 are also a bit different, with the enemy explosion and ship destroyed sounds being different than player 1. The overlay contained many colors, running from red (player 1) to yellow (player 2), with various shades of blue and green in between.

The game used a Z80A processor. Replacing the CPU with a regular Z80 causes the game to play the 'THUMP THUMP' sound during the attract mode.


Designed and programmed by : Joel Kreger