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invad2ct: MAME ROM Information.


Space Invaders II (c) 1980 Midway.

Space Invaders II allowed for 2-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!


This game was only available in a cocktail table cabinet. No upright or cabaret model were manufactured.

Game ID : 851

Main CPU : 8080A (@ 1.9968 Mhz)

Sound Chips : (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


Released in March 1980.

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 8080A processor. Replacing the CPU with a regular 8080 causes the game to play the 'THUMP THUMP' sound during the attract mode.


Occasionally, a mystery ship will fly by, dropping more invaders!! When 2 players are playing, TWO different mystery ships fly by. The points for shooting them range from 50 pts to 525 pts (!!!).

When playing with 2 players, player-2 has lost all of his ships, and he still has invaders left on his side, they will move back and forth when they 'land' endlessly, until player 1 destroys them.

If 2 players are playing, player-2 has lost all of his ships, and player-1 clears player-2's board with ships left, player-2 will gain one of player 1's ships to return to the game!!


Original game design & programming by : Tomohiro Nishikado

Game changes designed & programmed by : Joel Kreger


Machine's picture.

Game's rom.

MAME Info:

0.36b15 [Frank Palazzolo]

Artwork available


- 0.145u1: hap tweaked layout in Space Invaders II.

- 13th October 2008: Mr. Do - Looks like I wasn't paying attention on invad2ct. Zorg was kind enough to fix it proper and vector the whole thing. Looks much better now.

- 9th July 2008: Mr. Do - Added cocktail artwork to Midway Space Invaders II, thanks to the BYOAC/CAG artwork.

- 0.114u2: Replaced 2x Samples sound with Discrete.

- 0.111u4: Zsolt Vasvari and Derrick Renaud added non-memory mapped coin counters to Space Invaders II. Changed 8080 CPU clock speed to 1996800 Hz. Added 2nd Samples sound. Added 'Cabinet' dipswitch.

- 0.111u2: Derrick Renaud added proper watchdog to Space Invaders II.

- 0.111u1: Robert fixed SN76477 sound in Space Invaders II.

- 0.58: Changed 8080 CPU1 clock speed to 2MHz.

- 0.37b1: Added 2x SN76477 sound (samples 0.wav and 10.wav are no longer needed).

- 0.36RC2: Changed description to 'Space Invaders II (Midway, cocktail)'.

- 0.36b15: Frank Palazzolo added 'Space Invaders II Cocktail (Midway)' (Midway 1980).

- 3rd January 2000: Frank Palazzolo added a Space Invaders II Cocktail romset.

- 9th April 1999: Frank Palazzolo has been adding Space Invaders II cocktail to the 8080bw driver.

LEVELS: 1 (endless)

Other Emulators:

* Laser

Recommended Games:

Space Beam

Space Laser

Recommended Games (Space Invaders):

Space Invaders

Space Invaders Part II

Return of the Invaders

Space Invaders DX

Super Space Invaders '91

Space Invaders '95 - Attack Of The Lunar Loonies

Space Invaders Anniversary

Space Invaders II

Space Stranger

Super Invader Attack


Invinco / Deep Scan

Invinco / Head On 2

Rolling Crash / Moon Base

Space Attack

Space Attack / Head On

Space Fever

Space Fever High Splitter

Space Fighter Mark II

Space King 2

Beam Invader

Rotary Fighter

IPM Invader

Shuttle Invader

Attack Ufo

Space Intruder

Romset: 12 kb / 6 files / 8.49 zip

MAME XML Output:

       <game name="invad2ct" sourcefile="mw8080bw.c">
              <description>Space Invaders II (Midway, cocktail)</description>
              <rom name="invad2ct.h" size="2048" crc="51d02a71" sha1="2fa82ddc2702a72de0a9559ec244b70ab3db3f18" region="maincpu" offset="0"/>
              <rom name="invad2ct.g" size="2048" crc="533ac770" sha1="edb65c289027432dad7861a7d6abbda9223c13b1" region="maincpu" offset="800"/>
              <rom name="invad2ct.f" size="2048" crc="d1799f39" sha1="f7f1ba34d57f9883241ba3ef90e34ed20dfb8003" region="maincpu" offset="1000"/>
              <rom name="invad2ct.e" size="2048" crc="291c1418" sha1="0d9f7973ed81d28c43ef8b96f1180d6629871785" region="maincpu" offset="1800"/>
              <rom name="invad2ct.b" size="2048" crc="8d9a07c4" sha1="4acbe15185d958b5589508dc0ea3a615fbe3bcca" region="maincpu" offset="5000"/>
              <rom name="invad2ct.a" size="2048" crc="efdabb03" sha1="33f4cf249e88e2b7154350e54c479eb4fa86f26f" region="maincpu" offset="5800"/>
              <chip type="cpu" tag="maincpu" name="8080" clock="1996800"/>
              <chip type="audio" tag="spk1" name="Speaker"/>
              <chip type="audio" tag="spk2" name="Speaker"/>
              <chip type="audio" tag="discrete" name="DISCRETE"/>
              <chip type="audio" tag="sn1" name="SN76477"/>
              <chip type="audio" tag="sn2" name="SN76477"/>
              <display tag="screen" type="raster" rotate="90" width="260" height="224" refresh="59.541985" pixclock="4992000" htotal="320" hbend="0" hbstart="260" vtotal="262" vbend="0" vbstart="224" />
              <sound channels="2"/>
              <input players="2" buttons="1" coins="1">
                     <control type="joy" ways="2"/>
              <dipswitch name="Service Mode" tag="IN0" mask="1">
                     <dipvalue name="Off" value="1" default="yes"/>
                     <dipvalue name="On" value="0"/>
              <dipswitch name="Coinage" tag="IN2" mask="3">
                     <dipvalue name="2 Coins/1 Credit" value="2"/>
                     <dipvalue name="2 Coins/2 Credits" value="3"/>
                     <dipvalue name="1 Coin/1 Credit" value="0" default="yes"/>
                     <dipvalue name="1 Coin/2 Credits" value="1"/>
              <dipswitch name="Cabinet" tag="IN2" mask="8">
                     <dipvalue name="Upright" value="8" default="yes"/>
                     <dipvalue name="Cocktail" value="0"/>
              <dipswitch name="Bonus Life" tag="IN2" mask="128">
                     <dipvalue name="1500" value="128" default="yes"/>
                     <dipvalue name="2000" value="0"/>
              <driver status="imperfect" emulation="good" color="good" sound="imperfect" graphic="good" savestate="supported" palettesize="0"/>

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