Publishers
System
A'n'F Software
Aackosoft
Aackosoft (Eaglesoft)
Aackosoft Edusystems
Activision
Activision (Electric Dreams)
Alligata
Alligata (Budgie)
Alternative Software (199 Range)
Alternative Software (299 Range)
Alternative Software (Winner)
Anglosoft
Anirog
Armati (Turbo Games / Max Media)
Aschcom
ASCII
Beau-Jolly
Bridgesoft
Bubble Bus Software
Bug-Byte
C.D. Systems
CDS Software
CDS Software (Blue Ribbon)
Computer World (Softworld)
Coté Gamers
Courbois Software Beuningen [C.S.B.]
d3m Software
Data Beutner (Stone-Castle)
Databyte
Dek Soft
Dinamic / Microdigital Soft
Domark
Dynabyte Software
Electric Software
Electronic Distribution of Software [EDOS]
Epyx
ERBE Software
Eurosoft (Aackosoft)
Eurosoft International [ESI]
Fermont (New Video Games MSX)
Generalitat de Catalunya
Grandslam
Grandslam (Bug Byte Premier)
Gremlin Graphics
H.A.L. Labs
HAL Laboratory Inc.
Heart Soft
Hudson Soft
IBER Software
IBSA (The Hit Squad)
Imagine
Infogrames
Interceptor Software (Players)
Interceptor Software (Players Premier)
Jopac
Kluwer
Konami
Krisalis Software / Chrysalis Software
Kuma Computers
Malmberg
Mastertronic
Mastertronic (199 Range)
Mastertronic (Bulldog Software)
Mastertronic (Entertainment USA)
Mastertronic (M.A.D.)
Mastertronic (Ricochet)
MCM Software
Melbourne House
Methodic Solutions (Aackosoft)
Micro Technology BV
Microcomputer Club Nederland [MCN]
Micropool
Mirrorsoft
Morewood Software
Mr. Micro
Nederlandse Omroep Stichting (NOS) / Hobbyscoop
Nihon Falcom
Ocean
Ocean (The Hit Squad)
Odin Software Gmbh
Opera Soft
Orpheus Ltd.
PBNA
Personal Software Services [PSS]
Philips
Premium III Software Distribution (Aackosoft)
Prism Leisure (Endurance Games)
Pubblirome
Quicksilva
Radarsoft
Rainbird
Robcom / Robtek / Share Operating Services
Salasan
SamoSoft
Sanyo
Sein Soft Inc.
Software Projects
Sony Corporation
Spectravideo Computer Users Club (SVI C.U.C.)
SpectraVideo International (SVI)
SubLOGIC
Sumlock Microware (LiveWire)
Sunrise (www.msx.ch)
T & E Soft
Taito
Telenet Japan
Terminal Software
Tilburgse MSX Gebruikersgroep
Toemiland
Tomo Soft International
Toshiba
Tynesoft
Tynesoft (MicroValue)
U.S. Gold
U.S. Gold (Kixx)
Ultimate Play The Game
Vifi International / Nathan
Virgin Games
WHSmith
Publisher Information and Releases
Robcom / Robtek / Share Operating Services
Started life as Share Operating Services in the Netherlands. (Hyacinthenveld 69, 4613 DL Bergen Op Zoom) as
(source Commodore User Magazine Issue 24 1985-09), moved to the UK and started using the Robcom name.
(36 Marketplace, Falloden Way, London, NW11 6JP (Phone 01-209 0118)

After a few releases the renamed from Robcom to ROBTEK. (End of 1985)
The change on the company name came with the introduction of the Game Killer cartridges if we can trust the adverts.
Publisher Information at Amiga Hall of Light also notes ROBTEK as the company behind a few games.


Game Killer Cartridge

On powerup a real intro pops up. It is packed with MC CRACKEN COMPRESSOR 1.3 and includes a scroller reading:

Copyright (c) M.F.Zonnefeld/P.A.Share - ROBTEK 1986. Graphics by J.W.A.Kampstra. Music by R.Hubbard. Exclusively licensed to MASTERTRONIC Int. for America, Canada and Australia under the name 'INFINITY MACHINE'. Manufactured by RAM ELECTRONICS....GAME KILLER gives you the advantage over you computer. Break through your game with ROBTEKS GAME KILLER.....HIT SPACE TO CONTINUE....

This article from Zzap! also notes the tune by Rob Hubbard and this excellent article at Commodore Zone about Rob reads:

In 1986 the company Robtek marketed a new product called Game Killer for the Commodore 64. It was a cartridge-based device that allowed gamers to cheat when playing certain games that contained sprite collision code. The cartridge would allow the sprite collision to be switched off, which in effect meant that you could complete a game because the in-game enemies could never kill your character!

Unfortunately it did not work that well as it was only useful for certain games due to the software method used.

Robtek asked Hubbard to compose the theme music for the software. It was the only commercial software utility that contained a Hubbard soundtrack and what a soundtrack it is! It’s actually a remix of some music he did for the Human Race (Mastertronic 1986).

It has a memorable chorus line, which you won’t easily forget, it’s one of those tunes that just seems to stay in your head even after all these years - I can still hear the tune now! As usual it complements the software well and is most appropriate.
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