Bits N Bytes

A compilation of seven simple games and applications, available soon from Packrat Video Games.

The cartridge Includes :

Vector Pong : A Ping -pong game for 1 or 2 players.

Frogs n Flies : Eat-em-up game for 1 or 2 players.

Hex : Shoot the enemies and avoid barriers for bonus points in this twitchy action game. 1 player only. Supports Atari Driving controller in port 2.

Space Race : Avoid the asteroids and complete ‘laps’ of the asteroid field to win. 1 or 2 players.

Quick Shot : Test your button mashing skills. 1 player only.

Doodle : Use the Vectrex light-pen or joystick to doodle drawings on screen.

Vector Clock : A clock application for Vectrex. Plays a random short piece of music every hour.

Xmas Space Race (Free ROM Download)

As I didn’t have time to write any new Xmas themed games for 2016, I thought I’d make a little festive mod to one of my existing ones.

Xmas Space Race” plays the same as the hidden 2 player game “Space Race“, found on my “Galaxy Wars : Space Launcher” cartridge. This version adds Christmas trees and a single player mode where you race against the Vectrex!

Click HERE for the download!

Happy holidays folks!


Revival Summer Solstice 2016

Myself and Jim Watt (Author of NOX) will be appearing at Revival Summer Solstice 2016 demonstrating Death Chase / Nox, Galaxy Wars / Space Launcher and previewing my upcoming lightgun games.

The day-ticket giveaway competition is now closed.

Congratulations to the winner, David Dewson.


More Info at :

Hopefully see some of you at the show!

Vector Clock (Free ROM Download)

Just for fun, I made a simple vector clock for Vectrex. Dont expect the timing to be super accurate but it does stay in sync for quite some time  😉

You can adjust the hour by pressing and holding button1 and holding the joystick in the left or right direction to adjust. Minutes are adjusted in the same way with button 2. Button 3 resets the second hand and button 4 toggles minute/second dots on/off. The clock plays one of 13 different pieces of music every hour.

Free ROM Download :

Change Log:


  • Button 4 now toggles second/minute dots on/off.


  • More accurate timing
  • Speed adjust (0-25). Larger values increase clock speed.


  • Initial Release

DIY Vectrex Light Phaser

Instructions for making your own Sega Light Phaser to Vectrex Lightgun adapter. I’ll be making some of these available with the first lightgun compatible cartridge I produce. Stay tuned for more info 😉


Parts needed :

1 x Genesis/Atari cable (with all pins connected)

1x DB9 plug

1x DB9 hood

Tools Used :

Soldering iron

Hot Glue gun



The first job is to test continuity on the pins on the joystick connector with a multimeter to identify which coloured wires to use.

Vectrex Controller Pinout
Sega Light Phaser Pinout
Pin Mapping

SMS Pin 7 (Light sensor) to Vectrex Pin 4 (Button 4)
SMS Pin 6 (Trigger) to Vectrex Pin 3 (Button 3)
SMS Pin 5 (+5v) to Vectrex Pin 7 (+5v)
SMS Pin 8 (GND) to Vectrex Pin 8 (GND)

On the cable I used the wires are as follows :

Yellow : Light Sensor

Orange/Peach : Trigger

Grey : +5v

Black : GND

Next we isolate these wires and strip them for soldering to the plug.


On the plug, we solder to pins 5,6,7 and 8 using the pin mapping listed above.


Once soldering is complete, you should attach the DB9 hood and test the lightgun is working on the Vectrex. You may need to cut away part of the plastic connector with a craft knife to allow the connector to properly insert into the Vectrex. If you are unsure how to cut it, refer to the standard Vectrex connector shape.


If it is not working as expected, check pin-mapping and continuity with a multimeter and correct any mistakes made.

If working successfully with Vectrex, remove the top of the DB9 hood, add hot glue to hold the connections and attach the hood again.


Leave the glue to solidify for a few hours and then enjoy your new lightgun adapter!



Forthcoming lightgun (and lightpen) compatible games from Binary Star Software :


Ghost Bursters