Well, whatever!
Chances are that it is a game
demo, not a full game because the main executable is indeed called "demo".
(In worst case, it's another stolen preview...remember the Gem'Z story!
)
[edit] The demo bit seems right, because the intro text gives some more info...
Code:
-C5- AND CHRIS (U.S.I) PROUDLY PRESENT THE FIRST AND ONLY OFFICIAL DEMO-VERSION OF A M I G A N O I D !! THE FINAL VERSION WILL HAVE: SUPER-SOUNDS, MORE AND OTHER BACKGROUND PICTURES AND MUCH MORE OTHER THINGS. AMIGANOID WAS WRITTEN BY -C5- (064/46 26 61/ SWITZERLAND). PROGRAMMING SUPPORT BY CHRIS. IF YOU WANT TO USE BOTH RACKETS THEN PLUG A SECOND MOUSE IN PORT TWO OF YOUR AMIGA. BUT FIRST A MESSAGE TO ALL FANS OF INSANITY FIGHT (IF THEY EXIST). IT WILL BE AVAILABLE IN DECEMBER 1987 . IT HAS COMPLETLY NEW GRAPHICS AND SUPER SOUND. BUT HERE COMES THE MOST IMPORTANT PART OF THIS INTRO --> THE GREETINGS TO: TYTAN 2112, SWISS CRACKING ASSOCIATION (MY AMIGA IS ALIVE!)<snip>
The game mentioned in there, Insanity Fight, is a game developed by LINEL so "Chris" mentioned in the intro giving "programming support" can be no other than Christian Haller! This means it's rather not a SW 2000 game, but apparently a game originally meant to be published by LINEL.
(However, it should be noted that even SW 2000 and Linel have a sort of relation because they collaborated for the unreleased game "Schatz im Silbersee".)
Also, I found out that 064 is an old area code in the Swiss canton Aargau (now merged with 062), so that's where the programmer lived or still lives.