Those are sample programs, ready to be downloaded to an unexpanded VIC.

o artillery
  One of the best BASIC programs I have ever written for the VIC.
  Long before TEAM 17's 'Worms' game ever existed...
o duck_shoot
  The bonus game in Lotus II/Amiga (Dux)
o pursuit
  Can you beat my 1413 points hiscore at this game?
o vic_blitz
  The classic Blitz game from Commodore UK
