This is a multi-game hack on a standard Galaxians PCB. It allows you to select from 8 different games, and return to the menu at any time within a game to change to a different selection. It requires a fair amount of wiring, especially for the colour prom replacement, but if you fancy giving it a go, then email me for files and instructions.

PCB

Screen shots

Pinouts

Galaxian pinout with addition of Up and Down for War of the Bugs.  n.b. PCB Has been converted for DC.

Letters are taken from silk print on Namco PCB

Components Solder

Ground

Z

22

Ground

Ground

Ground

+12v 

+12v 

+12v 

W

+12v 

Speaker -

Speaker +

Video Blue

Video Sync

Video Red

Video Green

Ground

S

Video Ground

Table

Player 2 Down

Player 2 Left

Player 2 Right

Player 1 Fire

Player 2 Fire

Player 1 Left

Player 1 Right

Start 1

L

Start 2

Player 1 Down

Player 1 Up

Coin 1

Player 2 Up

Coin Lockout

Coin Counter

1 Play Lamp

2 Play Lamp

NC

E

NC

+5v

+5v

+5v

+5v

Ground

Ground

Ground

A

1

Ground

Dip Switches

Because of the number of games in there, all with different switch settings, the best thing is to leave them all off!